GIGABYTE A520M S2H User's Manual

For more product details, please visit GIGABYTE's website.

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Copyright & Disclaimer

© 2023 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved. Trademarks mentioned are legally registered to their respective owners.

Disclaimer

Information in this manual is protected by copyright laws and is the property of GIGABYTE. Specifications and features may change without prior notice. No part of this manual may be reproduced without GIGABYTE's written permission.

• Carefully read the User's Manual for product use assistance.
• For product-related information, check the GIGABYTE website: https://www.gigabyte.com

Identifying Your Motherboard Revision

The motherboard revision number appears as "REV: X.X." (e.g., "REV: 1.0"). Check this revision before updating BIOS, drivers, or seeking technical information. The revision number is typically located near the audio components on the motherboard, often next to a label like "AUDIO" or "AMP-".

Chapter 1: Hardware Installation

1-1 Installation Precautions

• Ensure the chassis is suitable for the motherboard.
• Do not remove or break motherboard S/N (Serial Number) or warranty stickers; they are required for warranty validation.
• Always unplug the AC power cord from the outlet before installing or removing components.
• Connect hardware components tightly and securely to internal connectors.
• Avoid touching metal leads or connectors when handling the motherboard.
• Wear an electrostatic discharge (ESD) wrist strap. If unavailable, keep hands dry and touch a metal object to eliminate static electricity.
• Place the motherboard on an antistatic pad or in an electrostatic shielding container before installation.
• Ensure the power supply is turned off before connecting or unplugging its cable from the motherboard.
• Set the power supply voltage according to local standards before turning on power.
• Verify all cables and power connectors are connected before using the product.
• Do not allow screws to contact motherboard circuits or components to prevent damage.
• Ensure no leftover screws or metal components are inside the computer casing.
• Do not place the computer system on an uneven surface.
• Avoid high-temperature or wet environments for the computer system.
• Turning on power during installation can damage components and harm the user.
• Consult a certified computer technician if uncertain about installation steps or product use.
• If using an adapter, extension power cable, or power strip, consult its installation and/or grounding instructions.

1-2 Product Specifications

CPU

• Socket: AMD Socket AM4
• Supported Processors: AMD Ryzen™ 5000 G-Series, AMD Ryzen™ 5000 Series, AMD Ryzen™ 4000 G-Series, AMD Ryzen™ 3000 Series Processors.
• For the latest CPU support list, visit GIGABYTE's website.

Chipset

• AMD A520

Memory

• DIMM Sockets: 2 x DDR4 DIMM sockets, supporting up to 64 GB (32 GB single DIMM capacity).
• Supported Speeds: DDR4 3200/2933/2667/2400/2133 MT/s memory modules.
• Architecture: Dual channel memory.
• ECC Support: ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules.
• Non-ECC Support: Non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules.
• XMP Support: Extreme Memory Profile (XMP) modules.
• For the latest supported memory speeds and modules, visit GIGABYTE's website.

Onboard Graphics

• Integrated Graphics Processor:
  • 1 x D-Sub port, max resolution 1920x1200@60 Hz.
  • 1 x DVI-D port, max resolution 1920x1200@60 Hz. (Note: DVI-D port does not support D-Sub connection by adapter.)
  • 1 x HDMI port, max resolution 4096x2160@60 Hz, supports HDMI 2.1 version, HDCP 2.3, and HDR.
• Supports up to 3 displays simultaneously.
• Maximum shared memory of 16 GB.

Audio

• Realtek® audio CODEC
• High Definition Audio
• 2/4/5.1/7.1-channel audio.

• You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings.

LAN

• Realtek® GbE LAN chip (1 Gbps/100 Mbps)

Expansion Slots

• CPU: 1 x PCI Express x16 slot, supporting PCIe 3.0 and running at x16.
• Chipset: 2 x PCI Express x1 slots, supporting PCIe 3.0.

Storage Interface

• CPU: 1 x M.2 connector (Socket 3, M key, type 2242/2260/2280 SATA and PCIe 3.0 x4/x2 SSD support).
• Chipset: 4 x SATA 6Gb/s connectors.
• Supports RAID 0, RAID 1, and RAID 10.

USB

• CPU: 4 x USB 3.2 Gen 1 ports on the back panel.
• Chipset:
  • 2 x USB 3.2 Gen 1 ports available through the internal USB header.
  • 6 x USB 2.0/1.1 ports (2 ports on the back panel, 4 ports available through the internal USB headers).

Internal Connectors

• 1 x 24-pin ATX main power connector
• 1 x 8-pin ATX 12V power connector
• 1 x CPU fan header
• 2 x system fan headers
• 1 x addressable LED strip header
• 1 x RGB LED strip header
• 1 x M.2 Socket 3 connector
• 4 x SATA 6Gb/s connectors
• 1 x front panel header
• 1 x front panel audio header
• 1 x USB 3.2 Gen 1 header
• 2 x USB 2.0/1.1 headers
• 1 x Trusted Platform Module (TPM) header (2x6 pin, for the GC-TPM2.0_S module only)
• 1 x serial port header
• 1 x speaker header
• 1 x chassis intrusion header
• 1 x Clear CMOS jumper

Back Panel Connectors

• 1 x PS/2 keyboard/mouse port
• 1 x D-Sub port
• 1 x DVI-D port
• 1 x HDMI port
• 4 x USB 3.2 Gen 1 ports
• 2 x USB 2.0/1.1 ports
• 1 x RJ-45 port
• 1 x Q-Flash Plus button
• 3 x audio jacks

I/O Controller

• iTE® I/O Controller Chip

Hardware Monitor

• Voltage detection
• Temperature detection
• Fan speed detection
• Overheating warning
• Fan fail warning
• Fan speed control (Note: Support depends on the fan installed.)

BIOS

• 1 x 128 Mbit flash
• Licensed AMI UEFI BIOS
• PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0

Unique Features

• Support for APP Center: Available applications may vary by motherboard model and supported functions may vary depending on motherboard specifications. Includes: @BIOS, EasyTune, RGB Fusion, Smart Backup, System Information Viewer.
• Support for Q-Flash Plus
• Support for Q-Flash

Bundled Software

• Norton® Internet Security (OEM version)
• LAN bandwidth management software

Operating System

• Support for Windows 11 64-bit
• Support for Windows 10 64-bit

Form Factor

• Micro ATX Form Factor; 24.4cm x 20.5cm

1-3 Installing the CPU

• Ensure motherboard supports the CPU. (Refer to GIGABYTE's website for CPU support list.)
• Always turn off and unplug AC power before installation to prevent hardware damage.
• Locate pin one (marked by a small triangle) on both the CPU socket and the CPU. The CPU cannot be inserted if oriented incorrectly.
• Apply an even, thin layer of thermal grease on the CPU surface.
• Do not turn on the computer without the CPU cooler installed; overheating and damage may occur.
• Set CPU host frequency according to CPU specifications. Setting it beyond specifications is not recommended as it may not meet standard requirements for peripherals. If you choose to do so, ensure it aligns with your hardware specifications (CPU, graphics card, memory, hard drive, etc.).

Installing the CPU Steps:

1. Completely lift the CPU socket locking lever.
2. Locate the pin one (small triangle) on the CPU socket and the CPU.
3. Position the CPU into its socket.
4. Place one finger down on the middle of the CPU.
5. Lower the locking lever and latch it into the fully locked position.

1-4 Installing the Memory

• Ensure motherboard supports the memory. Using memory of the same capacity, brand, speed, and chips is recommended. (Refer to GIGABYTE's website for supported memory speeds and modules.)
• Always turn off and unplug AC power before installation to prevent hardware damage.
• Memory modules have a foolproof design; they can only be installed in one direction. If insertion is difficult, switch the direction.

Dual Channel Memory Configuration

This motherboard has two memory sockets and supports Dual Channel Technology. The BIOS automatically detects memory specifications and capacity after installation. Enabling Dual Channel memory mode doubles the original memory bandwidth.

The two memory sockets are divided into two channels:

• Channel A: DDR4_A1
• Channel B: DDR4_B1

Visit GIGABYTE's website for details on hardware installation.

1-5 Installing an Expansion Card

• Ensure motherboard supports the expansion card. Carefully read the expansion card's manual.
• Always turn off and unplug AC power before installation to prevent hardware damage.

1-6 Back Panel Connectors

The back panel features various ports for external devices:

• USB 2.0/1.1 Ports: For USB devices.
• PS/2 Keyboard/Mouse Port: For connecting a PS/2 mouse or keyboard.
• D-Sub Port (Note 1): 15-pin D-Sub connector, max resolution 1920x1200@60 Hz. Connect a D-Sub supported monitor.
• DVI-D Port (Note 1)(Note 2): Conforms to DVI-D specification, max resolution 1920x1200@60 Hz. Connect a DVI-D supported monitor.
• HDMI Port (Note 1): HDMI™ (High-Definition Multimedia Interface) port, HDCP 2.3 compliant, supports Dolby TrueHD and DTS HD Master Audio formats. Supports up to 192KHz/24bit 7.1-channel LPCM audio output. Max resolution 4096x2160@60 Hz. Connect an HDMI-supported monitor.

Triple-Display Configurations for the Onboard Graphics:

Triple-display configurations are supported after installing motherboard drivers in the OS. Only single display is available during BIOS Setup or POST.

USB 3.2 Gen 1 Port

Supports USB 3.2 Gen 1 specification and is compatible with USB 2.0. Use for USB devices.

USB 3.2 Gen 1 Port (Q-Flash Plus Port)

Supports USB 3.2 Gen 1 specification. Use for USB devices. Before using Q-Flash Plus (Note 3), insert the USB flash drive into this port first.

Q-Flash Plus Button (Note 3)

Allows BIOS update when the system is off (S5 shutdown state). Save the latest BIOS on a USB thumb drive, plug it into the Q-Flash Plus port, and press the Q-Flash Plus button. The QFLED will flash during BIOS matching and flashing, and stop when complete.

RJ-45 LAN Port

The Gigabit Ethernet LAN port provides Internet connection up to 1 Gbps data rate. LAN port LED states:

Audio Jack Configurations:

• Line In/Rear Speaker Out (Blue): For line-in devices (e.g., optical drive, walkman).
• Line Out/Front Speaker Out (Green): The line out jack.
• Mic In/Center/Subwoofer Speaker Out (Pink): The mic in jack.

1-7 Internal Connectors

The motherboard features various internal connectors. Refer to the following descriptions for proper connection:

• Ensure devices are compliant with the connectors.
• Turn off devices and computer, unplug power cord to prevent damage.
• After installation, ensure device cable is securely attached to the motherboard connector before turning on.

1/2) ATX_12V/ATX (2x4 12V Power Connector and 2x12 Main Power Connector)

The power supply provides stable power to all motherboard components. Ensure power supply is off and all devices are installed before connecting. The connector has a foolproof design. The 12V power connector primarily supplies power to the CPU; the computer will not start if it's not connected.

3/4) CPU_FAN/SYS_FAN1/2 (Fan Headers)

All fan headers are 4-pin with a foolproof insertion design. Connect fan cables correctly (black wire is ground). Speed control requires a fan with speed control design. A system fan is recommended for optimum heat dissipation.

5) D_LED1 (Addressable LED Strip Header)

Connects a standard 5050 addressable LED strip (max 5A, 5V, 1000 LEDs). The power pin (triangle on plug) must connect to Pin 1 of the header. Incorrect connection can damage the LED strip.

6) LED_C (RGB LED Strip Header)

Connects a standard 5050 RGB LED strip (12V/G/R/B, max 2A, 12V, 2m length). The power pin (triangle on plug) must connect to Pin 1 of the header. Incorrect connection can damage the LED strip.

7) SATA3 0/1/2/3 (SATA 6Gb/s Connectors)

SATA connectors conform to SATA 6Gb/s standard, compatible with SATA 3Gb/s and SATA 1.5Gb/s. Each supports a single SATA device and RAID 0, 1, and 10. Refer to Chapter 3, "Configuring a RAID Set," for instructions.

8) M2A_CPU (M.2 Socket 3 Connector)

The M.2 connector supports M.2 SATA SSDs or M.2 PCIe SSDs and RAID configuration. An M.2 PCIe SSD cannot be used to create a RAID set with a SATA hard drive. Refer to Chapter 3, "Configuring a RAID Set," for instructions.

Installing an M.2 SSD:

1. Unfasten the screw and standoff from the motherboard. Locate the proper mounting hole for the M.2 SSD and screw in the standoff first.
2. Slide the M.2 SSD into the connector at an angle.
3. Press the M.2 SSD down and secure it with the screw.

9) F_PANEL (Front Panel Header)

Connect the power switch, reset switch, and system status indicator to this header according to pin assignments. Note positive and negative pins.

• PLED (Power LED): Connects to the chassis front panel power status indicator. On when system is operating (S0), off when in S3/S4 sleep state or powered off (S5).
• PW (Power Switch): Connects to the chassis front panel power switch. System shutdown configuration can be set via BIOS Setup.
• HD (Hard Drive Activity LED): Connects to the chassis front panel hard drive activity LED. On when hard drive is reading or writing data.
• RES (Reset Switch): Connects to the chassis front panel reset switch. Press to restart if computer freezes.
• NC: No connection.

10) F_AUDIO (Front Panel Audio Header)

Supports High Definition audio (HD). Connect your chassis front panel audio module. Ensure wire assignments match pin assignments to prevent device malfunction or damage.

11) F_U32 (USB 3.2 Gen 1 Header)

Conforms to USB 3.2 Gen 1 and USB 2.0 specifications, providing two USB ports. For optional 3.5" front panel, contact local dealer.

12) F_USB1/F_USB2 (USB 2.0/1.1 Headers)

Conforms to USB 2.0/1.1 specifications, each providing two USB ports via an optional USB bracket. For optional USB bracket, contact local dealer.

13) TPM (Trusted Platform Module Header)

Connect a TPM (Trusted Platform Module) to this header.

14) COM (Serial Port Header)

Provides one serial port via an optional COM port cable. For optional COM port cable, contact local dealer.

15) SPEAKER (Speaker Header)

Connects to the chassis front panel speaker. Reports system startup status via beep codes. A single short beep indicates no problem at system startup.

16) CI (Chassis Intrusion Header)

Provides chassis detection feature for cover removal. Requires a chassis with chassis intrusion detection design.

17) CLR_CMOS (Clear CMOS Jumper)

Clears BIOS configuration and resets CMOS values to factory defaults. Touch the two pins with a metal object (e.g., screwdriver) for a few seconds.

• Open: Normal
• Short: Clear CMOS Values

18) BAT (Battery)

The battery powers CMOS to retain BIOS configurations, date, and time when the computer is off. Replace the battery if voltage is low or CMOS values are inaccurate/lost.

Clearing CMOS by removing battery:

1. Turn off computer and unplug power cord.
2. Gently remove battery from holder and wait one minute (or touch positive and negative terminals with metal object for 5 seconds).
3. Replace battery.
4. Plug in power cord and restart computer.

Chapter 2: BIOS Setup

BIOS (Basic Input and Output System) records hardware parameters in CMOS. Functions include Power-On Self-Test (POST), saving system parameters, and loading OS. The battery supplies power to CMOS when power is off.

Access BIOS Setup by pressing <Delete> during POST. Upgrade BIOS using GIGABYTE Q-Flash or @BIOS utility.

• Q-Flash: Quickly upgrade or back up BIOS without entering the operating system.
• @BIOS: Windows-based utility to search, download, and update BIOS from the Internet.

2-1 Startup Screen

The GIGABYTE™ Insist on Ultra Durable logo screen appears when the computer boots.

Function Keys:

• DEL: BIOS SETUP / Q-FLASH
• F9: SYSTEM INFORMATION
• F12: BOOT MENU
• END: Q-FLASH

Two BIOS modes are available; use <F2> to switch. Easy Mode provides quick system info and basic adjustments. Advanced Mode offers detailed settings. Use arrow keys to navigate and <Enter> to select/enter sub-menus, or use a mouse.

2-2 The Main Menu

The main menu provides access to various setup menus and configuration items, along with hardware information.

Advanced Mode Function Keys:

2-3 Favorites (F11)

Set frequently used options as favorites. Use <F11> to quickly switch to the favorites page. Add/remove favorites by going to the original page and pressing <Insert>; a star sign indicates a favorite.

2-4 Tweaker

• CPU Clock Control: Manually set CPU base clock in 1 MHz increments. (Default: Auto). Important: CPU frequency should align with CPU specifications.
• Spread Spectrum Control: Enables or disables CPU/PCIe Spread Spectrum. (Default: Auto).

Advanced CPU Settings

• Core Performance Boost (Note): Enables/disables Core Performance Boost (CPB) technology, a CPU performance-boost technology. (Default: Auto).
• SVM Mode: Enables/disables Virtualization Technology for running multiple operating systems in independent partitions. (Default: Disabled).
• AMD Cool&Quiet function: Lets the AMD Cool'n'Quiet driver dynamically adjust CPU clock and VID to reduce heat output and power consumption. (Default: Enabled). Disables this function.
• PPC Adjustment (Note): Fixes the PState of the CPU. (Default: PState 0).
• Global C-state Control (Note): Enables/disables CPU entry into C states. When enabled, CPU core frequency reduces during system halt to decrease power consumption. (Default: Auto).

• Power Supply Idle Control (Note 1): Enables/disables Package C6 State.
• Typical Current Idle: Disables this function.
• Low Current Idle: Enables this function.
• Auto: Lets the BIOS automatically configure this setting. (Default).
• CCD Control (Note 1): Sets the number of CCDs to be used. (Default: Auto).
• Downcore Control: Selects the number of CPU cores to enable (may vary by CPU). (Default: Auto).
• SMT Mode: Enables/disables CPU Simultaneous Multi-Threading technology. (Default: Auto).
• CPPC (Note 1): Enables/disables the CPPC feature. (Default: Auto).
• CPPC Preferred Cores (Note 1): Enables/disables the CPPC Preferred Cores feature. (Default: Auto).
• Extreme Memory Profile (X.M.P.) (Note 2): Allows BIOS to read SPD data on XMP memory module(s) to enhance memory performance.
• Disabled: Disables this function. (Default).
• Profile1: Uses Profile 1 settings.
• Profile2 (Note 2): Uses Profile 2 settings.
• XMP High Frequency Support (Note 2): Selects compatibility level for high-frequency memory. Configurable only when Extreme Memory Profile (X.M.P.) is set to Profile1 or Profile2. (Default: Auto).
• System Memory Multiplier: Sets the system memory multiplier. Auto sets multiplier according to memory SPD data. (Default: Auto).

Advanced Memory Settings

• Memory Subtimings:
• Standard Timing Control, Advanced Timing Control, CAD Bus Setup Timing, CAD Bus Drive Strength, Data Bus Configuration: These sections provide memory timing settings. Note: System may become unstable or fail to boot after changes. Reset to default values by loading optimized defaults or clearing CMOS values.
• SPD Info: Displays information on installed memory.
• CPU Vcore/Dynamic Vcore(DVID)/VCORE SOC/Dynamic VCORE SOC(DVID)/CPU VDD18/CPU VDDP/A_VDD18S5/DRAM Voltage (CH A/B)/DDRVPP Voltage (CH A/B)/DRAM Termination (CH A/B): Adjusts CPU Vcore and memory voltages.

CPU/VRM Settings

This submenu configures Load-Line Calibration level.

2-5 Settings

Platform Power

• AC BACK: Determines system state after AC power loss.
• Memory: System returns to last known awake state.
• Always On: System turns on upon AC power return.
• Always Off: System stays off upon AC power return. (Default).
• Power On By Keyboard: Allows system to turn on by PS/2 keyboard wake-up event. Note: Requires ATX power supply providing at least 1A on +5VSB lead.
• Disabled: Disables this function. (Default).
• Password: Set 1-5 character password to turn on system.
• Keyboard 98: Press POWER button on Windows 98 keyboard to turn on system.
• Any key: Press any key to turn on system.
• Power On Password: Set password when Power On By Keyboard is set to Password. Enter password to turn on. To cancel, enter password then leave blank. Note: Set Administrator Password first.
• Power On By Mouse: Allows system to turn on by PS/2 mouse wake-up event. Note: Requires ATX power supply providing at least 1A on +5VSB lead.
• Disabled: Disables this function. (Default).
• Move: Move mouse to turn on system.
• Double Click: Double click left mouse button to turn on system.
• ErP: Determines if system consumes least power in S5 (shutdown) state. (Default: Disabled). Note: When Enabled, Resume by Alarm, power on by mouse, power on by keyboard, and wake on LAN become unavailable.
• Soft-Off by PWR-BTTN: Configures power button behavior in MS-DOS mode.
• Instant-Off: Press power button to instantly turn off. (Default).
• Delay 4 Sec.: Press and hold power button for 4 seconds to turn off. Pressing for less than 4 seconds enters suspend mode.

IO Ports

• Initial Display Output: Specifies first monitor display initiation from installed PCI Express graphics card or onboard graphics.
• IGD Video (Note): Sets onboard graphics as first display.
• PCIe 1 Slot: Sets graphics card on PCIEX16 slot as first display. (Default).
• Integrated Graphics (Note): Enables/disables onboard graphics function.
• Auto: BIOS automatically enables/disables onboard graphics based on installed graphics card. (Default).
• Forces: Enables onboard graphics.
• Disabled: Disables onboard graphics.
• UMA Mode (Note): Specifies UMA mode.
• Auto: BIOS automatically configures this setting. (Default).
• UMA Specified: Sets UMA Frame Buffer Size.
• UMA Auto: Sets display resolution.
• UMA Game Optimized: Adjusts frame buffer size based on total system memory size. Configurable only when Integrated Graphics is set to Forces.
• UMA Frame Buffer Size (Note): Total system memory allocated solely for onboard graphics controller. Options: Auto (default), 64M~2G. Configurable only when UMA Mode is set to UMA Specified.
• Display Resolution (Note): Sets display resolution. Options: Auto (default), 1920x1080 and below, 2560x1600, 3840x2160. Configurable only when UMA Mode is set to UMA Auto.

• HD Audio Controller: Enables/disables onboard audio function. (Default: Enabled). Set to Disabled if installing a 3rd party add-in audio card.
• PCIEX16 Bifurcation: Determines how PCIEX16 slot bandwidth is divided. Options: Auto, PCIE 2x8, PCIE 1x8/2x4, PCIE 2x4/1x8 (Note), PCIE 4x4 (Note). (Default: Auto).
• Above 4G Decoding: Enables/disables 64-bit capable devices to be decoded above 4 GB address space (only if system supports 64-bit PCI decoding). Set to Enabled if multiple advanced graphics cards are installed and their drivers fail to launch due to limited 4 GB memory address space. (Default: Disabled).
• Onboard LAN Controller: Enables/disables onboard LAN function. (Default: Enabled). Set to Disabled if installing a 3rd party add-in network card.

Super IO Configuration

• Serial Port 1: Enables/disables onboard serial port. (Default: Enabled).

USB Configuration

• Legacy USB Support: Allows USB keyboard/mouse in MS-DOS. (Default: Enabled).
• XHCI Hand-off: Determines whether to enable XHCI Hand-off for OS without XHCI Hand-off support. (Default: Enabled).
• USB Mass Storage Driver Support: Enables/disables support for USB storage devices. (Default: Enabled).
• Port 60/64 Emulation: Enables/disables emulation of I/O ports 64h and 60h. Enable for full legacy support for USB keyboards/mice in MS-DOS or OS without native USB device support. (Default: Disabled).
• Mass Storage Devices: Displays list of connected USB mass storage devices. Appears only when a USB storage device is installed.

NVMe Configuration

Displays information on installed M.2 NVME PCIe SSD.

SATA Configuration

• SATA Mode: Enables/disables RAID for chipset integrated SATA controllers or configures to AHCI mode.
• RAID: Enables RAID for SATA controller.
• AHCI: Configures SATA controllers to AHCI mode. Advanced Host Controller Interface (AHCI) allows storage driver to enable advanced Serial ATA features like Native Command Queuing and hot plug. (Default).

• NVMe RAID mode: Determines whether to use M.2 NVMe PCIe SSDs to configure RAID. (Default: Disabled).
• Chipset SATA Port Enable: Enables/disables integrated SATA controllers. (Default: Enabled).
• Chipset SATA Port 0/1/2/3: Displays information of connected SATA device(s).

Network Stack Configuration

• Network Stack: Disables/enables booting from network to install GPT format OS (e.g., Windows Deployment Services server). (Default: Disabled).
• IPv4 PXE Support: Enables/disables IPv4 PXE Support. Configurable only when Network Stack is enabled.
• IPv4 HTTP Support: Enables/disables HTTP boot support for IPv4. Configurable only when Network Stack is enabled.
• IPv6 PXE Support: Enables/disables IPv6 PXE Support. Configurable only when Network Stack is enabled.
• IPv6 HTTP Support: Enables/disables HTTP boot support for IPv6. Configurable only when Network Stack is enabled.
• PXE boot wait time: Configures wait time before pressing <Esc> to abort PXE boot. Configurable only when Network Stack is enabled. (Default: 0).
• Media detect count: Sets number of times to check media presence. Configurable only when Network Stack is enabled. (Default: 1).

Realtek PCIe GBE Family Controller

Sub-menu provides LAN configuration information and options.

Miscellaneous

• LEDs in System Power On State: Enables/disables motherboard LED lighting when system is on.
• Off: Disables selected lighting mode when system is on.
• On: Enables selected lighting mode when system is on. (Default).
• LEDs in Sleep, Hibernation, and Soft Off States: Sets lighting mode of motherboard LEDs in S3/S4/S5 state. Configurable when LEDs in System Power On State is set to On.
• Off: Disables selected lighting mode when system enters S3/S4/S5 state. (Default).
• On: Enables selected lighting mode when system enters S3/S4/S5 state.
• PCIe Slot Configuration: Sets operation mode of PCI Express slots to Gen 1, Gen 2 or Gen 3. Actual operation mode depends on slot hardware specification. Auto lets BIOS automatically configure. (Default: Auto).

• 3DMark01 Enhancement: Determines whether to enhance legacy benchmark performance. (Default: Disabled).
• IOMMU: Enables/disables AMD IOMMU support. (Default: Auto).
• AMD CPU fTPM: Enables/disables TPM 2.0 function integrated in AMD CPU. (Default: Disabled).
• Trusted Computing: Enables/disables Trusted Platform Module (TPM).

AMD CBS

This sub-menu provides AMD CBS-related configuration options.

PC Health

• Reset Case Open Status: Keeps/clears record of previous chassis intrusion status. (Default).
• Disabled: Keeps record.
• Enabled: Clears record; Case Open field shows "No" at next boot.
• Case Open: Displays detection status of chassis intrusion device. Shows "Yes" if cover removed, "No" otherwise. To clear record, set Reset Case Open Status to Enabled, save settings, and restart.
• CPU Vcore/CPU VDDP/DRAM Channel A/B Voltage/ +3.3V/+5V/+12V/VCORE SOC: Displays current system voltages.

Smart Fan 5

• Monitor: Selects target to monitor and adjust. (Default: CPU FAN).
• Fan Speed Control: Enables/disables fan speed control and adjusts fan speed.
• Normal: Fan runs at different speeds based on temperature. Adjust fan speed with System Information Viewer. (Default).
• Silent: Fan runs at slow speeds.
• Manual: Control fan speed in curve graph.
• Full Speed: Fan runs at full speeds.
• Fan Control Use Temperature Input: Selects reference temperature for fan speed control.
• Temperature Interval: Selects temperature interval for fan speed change.
• Fan Control mode:
• Auto: BIOS automatically detects fan type and sets optimal control mode. (Default).
• Voltage: Recommended for 3-pin fan.
• PWM: Recommended for 4-pin fan.
• Fan Stop: Enables/disables fan stop function. Set temperature limit using temperature curve. Fan stops when temperature is lower than limit. (Default: Disabled).

Chapter 3: Appendix

3-1 Configuring a RAID Set

RAID Levels

Before you begin, prepare the following:

• At least two SATA hard drives or SSDs. (Note: For optimal performance, use two identical model/capacity drives.)
• Windows setup disc.
• A USB thumb drive.

Configuring the Onboard SATA Controller

A. Installing SATA hard drive(s) in your computer

Install hard drives/SSDs in SATA/M.2 connectors. Connect power from power supply to hard drives.

B. Configuring SATA controller mode in BIOS Setup

Configure SATA controller mode correctly in BIOS Setup.

Steps:

1. Turn on computer, press <Delete> to enter BIOS Setup during POST.
2. Under Settings\IO Ports, set SATA Configuration\SATA Mode to RAID.
3. Save settings and restart. (If configuring NVMe PCIe SSDs for RAID, set NVMe RAID mode to Enabled.)

C. UEFI RAID Configuration

Steps:

1. In BIOS Setup, go to Boot and set CSM Support to Disabled. Save changes and exit.
2. After reboot, enter BIOS Setup again. Enter Settings\IO_Ports\RAIDXpert2 Configuration Utility.
3. On RAIDXpert2 Configuration Utility screen, press <Enter> on Array Management to enter Create Array screen. Select a RAID level (0, 1, or 10, depending on installed drives). Press <Enter> on Select Physical Disks.
4. On Select Physical Disks screen, select hard drives to include in RAID array and set to Enabled. Move to Apply Changes and press <Enter>. Return to previous screen and set Select CacheTagSize, Read Cache Policy, and Write Cache Policy.
5. Move to Create Array and press <Enter> to begin.
6. After completing, you'll return to Array Management screen. Under Manage Array Properties, view new RAID volume info (level, name, capacity).

Install the RAID driver and operating system

With correct BIOS settings, install the operating system.

Installing the Operating System

Some operating systems include RAID drivers, so a separate driver may not be needed during Windows installation. After OS installation, install all required drivers from GIGABYTE APP Center for system performance and compatibility. If additional RAID driver is needed during OS installation, follow these steps:

1. Go to GIGABYTE's website, browse to motherboard model's web page, download AMD RAID Preinstall Driver from Support\Download\SATA RAID/AHCI page, unzip, and copy files to USB thumb drive.
2. Boot from Windows setup disc and perform standard OS installation. When driver load screen appears, select Browse.
3. Insert USB thumb drive, browse to driver location. Select AMD-RAID Bottom Device, click Next. Then select AMD-RAID Controller, click Next. Continue OS installation.

Visit GIGABYTE's website for details on configuring a RAID array.

3-2 Drivers Installation

After OS installation, a dialog box will appear in the bottom-right corner of the desktop asking to download and install drivers and GIGABYTE applications via APP Center. Click Install to proceed. (In BIOS Setup, ensure Advanced\APP Center Download & Install Configuration\APP Center Download & Install is Enabled.)

When the End User License Agreement dialog box appears, press <Accept> to install APP Center. On the APP Center screen, select desired drivers and applications, then click Install.

The APP Center interface displays available drivers and utilities, such as @BIOS, EasyTune, OnOffCharge2, SIV, and SmartBackup, with their sizes and versions. Users can select which to install.

Before installation, ensure system is connected to the Internet.

Visit GIGABYTE's website for more troubleshooting information.

Regulatory Notices

United States of America, Federal Communications Commission Statement

Product Name: Motherboard
Trade Name: GIGABYTE
Model Number: A520M S2H

Supplier's Declaration of Conformity
47 CFR § 2.1077 Compliance Information

Responsible Party – U.S. Contact Information: G.B.T. Inc.
Address: 17358 Railroad street, City Of Industry, CA91748
Tel.: 1-626-854-9338
Internet contact information: https://www.gigabyte.com

FCC Compliance Statement: This device complies with Part 15 of the FCC Rules, Subpart B, Unintentional Radiators. Operation is subject to two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including undesired operation.

This equipment has been tested and found to comply with Class B digital device limits per Part 15 of FCC Rules. These limits provide reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy. If not installed and used per instructions, it may cause harmful interference to radio communications. No guarantee interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception (determined by turning equipment off/on), the user is encouraged to correct interference by: reorienting/relocating receiving antenna, increasing separation between equipment/receiver, connecting equipment to a different circuit outlet, or consulting dealer/radio/TV technician.

Canadian Department of Communications Statement

This digital apparatus does not exceed Class B limits for radio noise emissions from digital apparatus per Radio Interference Regulations of Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003.

Avis de conformité à la réglementation d'Industrie Canada

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

European Union (EU) CE Declaration of Conformity

This device complies with Electromagnetic Compatibility Directive 2014/30/EU, Low-voltage Directive 2014/35/EU, RoHS directive (recast) 2011/65/EU & the 2015/863 Statement. This product has been tested and found to comply with all essential requirements of the Directives.

European Union (EU) RoHS (recast) Directive 2011/65/EU & the European Commission Delegated Directive (EU) 2015/863 Statement

GIGABYTE products are not intended to add and are safe from hazardous substances (Cd, Pb, Hg, Cr+6, PBDE, PBB, DEHP, BBP, DBP and DIBP). Parts and components are carefully selected to meet RoHS requirements. GIGABYTE continues efforts to develop products that do not use internationally banned toxic chemicals.

European Union (EU) Community Waste Electrical & Electronic Equipment (WEEE) Directive Statement

GIGABYTE fulfills national laws as interpreted from 2012/19/EU WEEE (Waste Electrical and Electronic Equipment) (recast) directive. The WEEE Directive specifies treatment, collection, recycling, and disposal of electric and electronic devices and components. Under the Directive, used equipment must be marked, collected separately, and disposed of properly.

WEEE Symbol Statement

The WEEE symbol (a crossed-out wheeled bin) on the product or packaging indicates this product must not be disposed of with other waste. Instead, the device should be taken to waste collection centers for treatment, collection, recycling, and disposal.

For information on waste equipment recycling, contact your local government office, household waste disposal service, or where you purchased the product.

Battery Information

European Union—Disposal and recycling information

GIGABYTE Recycling Program (available in some regions)

The battery symbol (a crossed-out wheeled bin with a battery icon) indicates this product and/or battery should not be disposed of with household waste. Use the public collection system to return, recycle, or treat them per local regulations.

End of Life Directives—Recycling

The recycling symbol (a crossed-out wheeled bin) on the product or packaging indicates this product must not be disposed of with other waste. Instead, the device should be taken to waste collection centers for treatment, collection, recycling, and disposal.

Déclaration de Conformité aux Directives de l'Union européenne (UE)

Cet appareil portant la marque CE est conforme aux directives de l'UE suivantes: directive Compatibilité Electromagnétique 2014/30/UE, directive Basse Tension 2014/35/UE et directive RoHS II 2011/65/UE. La conformité à ces directives est évaluée sur la base des normes européennes harmonisées applicables.

European Union (EU) CE-Konformitätserklärung

Dieses Produkte mit CE-Kennzeichnung erfüllen folgenden EU-Richtlinien: EMV-Richtlinie 2014/30/EU, Niederspannungsrichtlinie 2014/30/EU und RoHS-Richtlinie 2011/65/EU erfüllt. Die Konformität mit diesen Richtlinien wird unter Verwendung der entsprechenden Standards zur Europäischen Normierung beurteilt.

CE declaração de conformidade

Este produto com a marcação CE estão em conformidade com das seguintes Diretivas UE: Diretiva Baixa Tensão 2014/35/EU; Diretiva CEM 2014/30/EU; Diretiva RSP 2011/65/UE. A conformidade com estas diretivas é verificada utilizando as normas europeias harmonizadas.

CE Declaración de conformidad

Este producto que llevan la marca CE cumplen con las siguientes Directivas de la Unión Europea: Directiva EMC (2014/30/EU), Directiva de bajo voltaje (2014/35/EU), Directiva RoHS (recast) (2011/65/EU). El cumplimiento de estas directivas se evalúa mediante las normas europeas armonizadas.

Dichiarazione di conformità CE

Questo prodotto è conforme alle seguenti direttive: Direttiva sulla compatibilità elettromagnetica 2014/30/UE, Direttiva sulla bassa tensione 2014/35/UE, Direttiva RoHS (rifusione) 2011/65/UE. Questo prodotto è stato testato e trovato conforme a tutti i requisiti essenziali delle Direttive.

The D33006 RoHS symbol indicates compliance with RoHS directives.

Contact Us

GIGA-BYTE TECHNOLOGY CO., LTD.

• Address: No.6, Baoqiang Rd., Xindian Dist., New Taipei City 231
• TEL: +886-2-8912-4000
• FAX: +886-2-8912-4005
• Tech. and Non-Tech. Support (Sales/Marketing): https://esupport.gigabyte.com
• WEB address (English): https://www.gigabyte.com
• WEB address (Chinese): https://www.gigabyte.com/tw

GIGABYTE eSupport

To submit a technical or non-technical (Sales/Marketing) question, please link to: https://esupport.gigabyte.com

The eSupport portal allows users to submit product, sponsorship, or marketing questions and inquiries for timely responses. It also provides quick links for downloads, FAQs, and warranty information.