GIGABYTE B550M DS3H AC & B550M DS3H Motherboard User Manual

Copyright

© 2023 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved. The trademarks mentioned in this manual are legally registered to their respective owners.

Disclaimer

Information in this manual is protected by copyright laws and is the property of GIGABYTE. Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice. No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE's prior written permission.

• For detailed product information, carefully read the User's Manual.
• For quick set-up of the product, refer to the Quick Installation Guide on GIGABYTE's website.

For product-related information, check on our website at: https://www.gigabyte.com

Identifying Your Motherboard Revision

The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard BIOS, drivers, or when looking for technical information.

Example:

A visual representation of the motherboard showing the location of the revision number, typically near the CPU socket or on a sticker.

Chapter 1 Product Introduction

1-1 Motherboard Layout

A diagram illustrating the layout of the GIGABYTE B550M DS3H AC motherboard, indicating key components and connectors such as:

• CPU Socket AM4
• DDR4 Memory Slots
• PCI Express Slots (PCIEX16, PCIEX1, PCIEX4)
• M.2 Connectors (M2A_CPU, M2B_SB)
• SATA Connectors
• ATX Power Connectors (24-pin ATX, 8-pin ATX 12V)
• Front Panel Headers (F_PANEL, F_AUDIO)
• USB Headers (Internal USB 3.2 Gen 1, USB 2.0/1.1)
• Fan Headers (CPU_FAN, SYS_FAN1, SYS_FAN2)
• LED Headers (D_LED1/D_LED2, LED_CPU, LED_C1/LED_C2)
• Back Panel Connectors (PS/2, DVI-D, DisplayPort, HDMI, USB 3.2 Gen 1, USB 2.0/1.1, RJ-45, Audio Jacks, SMA Antenna Connectors)
• Other Connectors (COM, TPM, CLR_CMOS, QFLASH_PLUS)
• Temperature sensor

Note: Some features are specific to the B550M DS3H AC model.

Chapter 2 Hardware Installation

2-1 Installation Precautions

Important precautions to prevent damage to the motherboard and other components during installation:

• Ensure the chassis is suitable for the motherboard.
• Do not remove or break motherboard S/N or warranty stickers.
• Always unplug the power cord before installation or removal of components.
• Ensure all hardware components are connected tightly and securely.
• Avoid touching metal leads or connectors when handling the motherboard.
• Use an anti-static wrist strap or touch a metal object to eliminate static electricity.
• Place the motherboard on an anti-static pad or in an electrostatic shielding container.
• Ensure the power supply is turned off before connecting or unplugging power cables.
• Verify the power supply voltage is set according to local standards.
• Ensure all cables and power connectors are properly connected before powering on.
• Do not allow screws to come in contact with the motherboard circuit.
• Ensure no leftover screws or metal components are in the computer casing.
• Do not place the computer system on an uneven surface or in a high-temperature or wet environment.
• Consult a certified computer technician if uncertain about installation steps.
• Follow installation and grounding instructions for adapters, extension cables, or power strips.

2-2 Product Specifications

Note: Only for B550M DS3H AC.

2-3 Installing the CPU

Guidelines for CPU installation:

• Ensure motherboard compatibility with the CPU.
• Always turn off the computer and unplug the power cord before installation.
• Locate the pin one on the CPU and CPU socket.
• Apply an even and thin layer of thermal grease on the CPU surface.
• Do not turn on the computer without a CPU cooler installed to prevent overheating.
• Set CPU host frequency according to CPU specifications.

Installation Steps:

1. Lift the CPU socket locking lever.
2. Locate the pin one on the CPU socket and the CPU (marked by a small triangle).
3. Position the CPU into the socket, ensuring correct orientation.
4. Gently press down on the CPU and lower the locking lever to secure it.

Warning: Do not force the CPU into the socket if the locking lever is not lifted.

For details on hardware installation, visit: http://www.gigabyte.com/WebPage/210/quick-guide.html?m=sw

2-4 Installing the Memory

Guidelines for memory installation:

• Ensure motherboard compatibility with the memory. It is recommended to use memory of the same capacity, brand, speed, and chips.
• Always turn off the computer and unplug the power cord before installation.
• Memory modules have a foolproof design and can only be inserted in one direction.

Dual Channel Memory Configuration:

This motherboard supports Dual Channel Technology, which doubles memory bandwidth. The four memory sockets are divided into two channels (Channel A: DDR4_A1, DDR4_A2; Channel B: DDR4_B1, DDR4_B2).

Recommended Dual Channel Memory Configuration:

(SS=Single-Sided, DS=Double-Sided, "--"=No Memory)

Note on Dual Channel Mode:

• Dual Channel mode cannot be enabled with only one memory module.
• When using two or four memory modules, it is recommended that they be of the same capacity, brand, speed, and chips.

A visual representation of the memory slots and recommended placement for single and dual channel configurations.

Recommendation: When installing a single memory module, install it in the DDR4_A2 or DDR4_B2 socket.

2-5 Installing an Expansion Card

Guidelines for installing an expansion card:

• Ensure motherboard compatibility with the expansion card.
• Always turn off the computer and unplug the power cord before installation.

Installation Steps:

1. Locate an expansion slot and remove the corresponding chassis back panel slot cover.
2. Align the card with the slot and press down until it is fully seated.
3. Secure the card's metal bracket to the chassis back panel with a screw.
4. Replace the chassis cover(s).
5. Turn on the computer and configure BIOS Setup if necessary.
6. Install the driver provided with the expansion card.

A diagram illustrating the installation of an expansion card into a PCIEX16 slot.

2-6 Back Panel Connectors

Description of the back panel connectors:

• USB 2.0/1.1 Port: For USB devices.
• PS/2 Keyboard/Mouse Port: For PS/2 keyboard or mouse.
• DVI-D Port: Supports maximum resolution of 1920x1200@60 Hz. Does not support D-Sub connection by adapter. (Note 1, Note 2)
• DisplayPort: Supports high quality digital imaging and audio, bi-directional audio transmission, DPCP and HDCP 2.3. Supports up to 5120x2880@60 Hz. (Note 2)
• HDMI Port: HDCP 2.3 compliant, supports Dolby TrueHD and DTS HD Master Audio. Supports up to 192KHz/24bit 7.1-channel LPCM audio output. Supports maximum resolution of 4096x2160@60 Hz. (Note 2)
• Triple-Display Configurations: Supported after installing motherboard drivers in OS.
• USB 3.2 Gen 1 Port: For USB devices.
• USB 3.2 Gen 1 Port (Q-Flash Plus Port): For USB devices. Use for Q-Flash Plus. (Note 3)
• SMA Antenna Connectors: For connecting antennas. (Note 4)
• RJ-45 LAN Port: Gigabit Ethernet connection up to 1 Gbps. Includes Connection/Speed LED and Activity LED status descriptions.
• Audio Jacks: Line In/Rear Speaker Out (Blue), Line Out/Front Speaker Out (Green), Mic In/Center/Subwoofer Speaker Out (Pink).

Audio Jack Configurations: A table showing audio jack functionality for 2-channel, 4-channel, 5.1-channel, and 7.1-channel audio.

For configuring 7.1-channel audio, access the audio software for settings. Visit GIGABYTE's website for details on configuring audio software: https://www.gigabyte.com/WebPage/698/realtek1220-audio.html

Important Note: When removing cables from back panel connectors, first remove the cable from the device, then from the motherboard. Pull cables straight out to prevent damage.

Notes:

• (Note 1) DVI-D port does not support D-Sub connection by adapter.
• (Note 2) For AMD Ryzen™ 5000 G-Series/4000 G-Series Processors only.
• (Note 3) To enable Q-Flash Plus, visit the "Unique Features" webpage of GIGABYTE's website.
• (Note 4) Only for B550M DS3H AC.

2-7 Internal Connectors

A diagram showing the location of internal connectors on the motherboard, with a corresponding list:

1. ATX_12V
2. ATX
3. CPU_FAN
4. SYS_FAN1/SYS_FAN2
5. D_LED1/D_LED2
6. LED_CPU
7. LED_C1/LED_C2
8. SATA3 0/1/2/3
9. M2A_CPU/M2B_SB
10. BAT (Battery)
11. F_AUDIO
12. F_PANEL
13. F_U32
14. F_USB1
15. COM
16. TPM
17. CLR_CMOS
18. QFLASH_PLUS

Guidelines before connecting external devices:

• Ensure devices are compliant with the connectors.
• Turn off devices and computer, and unplug the power cord before installing devices.
• Ensure device cables are securely attached to the motherboard connector before turning on the computer.

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

Description of the ATX 12V and ATX power connectors, including pin definitions. Recommends a power supply of 500W or greater for expansion requirements.

A diagram showing the ATX 12V and ATX power connectors with pin assignments.

3/4) CPU_FAN/SYS_FAN1/SYS_FAN2 (Fan Headers)

Description of the 4-pin fan headers. Supports CPU fan speed control. Recommends installing a system fan for optimum heat dissipation.

A diagram showing the CPU_FAN, SYS_FAN1, and SYS_FAN2 headers with pin definitions.

Important Note: Connect fan cables correctly to prevent CPU or system overheating. Do not place jumper caps on fan headers.

5) D_LED1/D_LED2 (Addressable LED Strip Headers)

Headers for connecting standard 5050 addressable LED strips (5V, max 1000 LEDs). Specifies power rating and connection details.

A diagram showing the D_LED1/D_LED2 headers with pin definitions and an illustration of connecting an LED strip.

Warning: Incorrect connection may damage the LED strip. Visit GIGABYTE's website for information on controlling LED strips.

6) LED_CPU (CPU Cooler LED Strip/RGB LED Strip Header)

Header for connecting CPU cooler LED strips or 5050 RGB LED strips (12V/G/R/B, max 2A, 2m). Specifies power rating and connection details.

A diagram showing the LED_CPU header with pin definitions and an illustration of connecting an RGB LED strip.

Warning: Incorrect connection may damage the LED strip. Visit GIGABYTE's website for information on controlling LED strips.

7) LED_C1/LED_C2 (RGB LED Strip Headers)

Headers for connecting standard 5050 RGB LED strips (12V/G/R/B, max 2A, 2m). Specifies power rating and connection details.

A diagram showing the LED_C1/LED_C2 headers with pin definitions and an illustration of connecting an RGB LED strip.

Warning: Incorrect connection may damage the LED strip. Visit GIGABYTE's website for information on controlling LED strips.

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

Description of SATA 6Gb/s connectors, compatible with SATA 3Gb/s and 1.5Gb/s. Supports RAID 0, RAID 1, and RAID 10. Refer to Chapter 3 for RAID configuration.

A diagram showing the SATA3 connectors with pin definitions.

9) M2A_CPU/M2B_SB (M.2 Socket 3 Connectors)

Description of M.2 connectors supporting M.2 SATA SSDs or M.2 PCIe SSDs and RAID configuration. Notes that M.2 PCIe SSD cannot be used in a RAID set with SATA SSD or HDD. Refer to GIGABYTE's website for RAID configuration instructions.

A diagram showing the M.2 connectors with installation steps.

Installation Steps for M.2 SSD:

1. Install the mounting clip.
2. Slide the M.2 SSD into the connector at an angle.
3. Secure the M.2 SSD by pressing the clip's tab into the mounting hole.

10) BAT (Battery)

Provides power to CMOS for BIOS settings when the computer is off. Instructions for clearing CMOS values by removing the battery.

Warning: Always turn off the computer and unplug the power cord before replacing the battery. Replace with an equivalent battery. Consult place of purchase or local dealer if unsure.

Note the positive and negative terminals when installing the battery. Handle used batteries according to local environmental regulations.

11) F_AUDIO (Front Panel Audio Header)

Header for connecting the chassis front panel audio module. Emphasizes matching wire assignments to motherboard header pin assignments to prevent damage.

A diagram showing the F_AUDIO header with pin definitions.

If the chassis has separated connectors, contact the chassis manufacturer for information.

12) F_PANEL (Front Panel Header)

Connects power switch, reset switch, speaker, chassis intrusion switch/sensor, and system status indicator. Notes positive and negative pins.

PLED/PWR_LED (Power LED): Indicates system status (On when operating, Off in sleep/off states).

PW (Power Switch): Connects to the chassis power switch. Configuration options available in BIOS Setup.

SPEAK (Speaker): Connects to the chassis speaker for system startup beep codes.

HD (Hard Drive Activity LED): Indicates hard drive activity.

RES (Reset Switch): For restarting the computer if it freezes.

CI (Chassis Intrusion Header): Connects to chassis intrusion switch/sensor.

NC: No connection.

A diagram showing the F_PANEL header with pin assignments and descriptions of each function.

The front panel design may differ by chassis. Ensure wire assignments match pin assignments.

13) F_U32 (USB 3.1 Gen 1 Header)

Conforms to USB 3.2 Gen 1 and USB 2.0 specifications. Provides two USB ports. Contact local dealer for optional 3.5" front panel.

A diagram showing the F_U32 header with pin definitions.

14) F_USB1 (USB 2.0/1.1 Header)

Conforms to USB 2.0/1.1 specification. Provides two USB ports via an optional USB bracket. Contact local dealer for optional USB bracket.

A diagram showing the F_USB1 header with pin definitions.

Warning: Turn off computer and unplug power cord before installing USB bracket.

15) COM (Serial Port Header)

Provides one serial port via an optional COM port cable. Contact local dealer for cable purchase.

A diagram showing the COM header with pin definitions.

16) TPM (Trusted Platform Module Header)

For connecting a TPM module.

A diagram showing the TPM header with pin definitions.

17) CLR_CMOS (Clear CMOS Jumper)

Clears BIOS configuration and resets CMOS values to factory defaults. Can be done by shorting the two pins with a metal object.

A diagram showing the CLR_CMOS jumper with "Open: Normal" and "Short: Clear CMOS Values" states.

Warning: Always turn off computer before clearing CMOS values. Load optimized defaults or manually configure BIOS settings after restart.

18) QFLASH_PLUS (Q-Flash Plus Button)

Allows BIOS update when the system is off. Save BIOS to a USB drive, plug into Q-Flash Plus port, and press the button. QFLED indicates flashing status.

A diagram showing the QFLASH_PLUS button and QFLED indicator.

Visit GIGABYTE's website for Q-Flash Plus usage instructions.

Chapter 3 BIOS Setup

BIOS Overview: The BIOS (Basic Input and Output System) records hardware parameters in the CMOS. Its functions include POST, saving system parameters, and loading the operating system. The BIOS Setup program allows modification of basic system configuration settings.

The motherboard battery supplies power to the CMOS when the computer is off.

Accessing BIOS Setup: Press the <Delete> key during POST.

Upgrading BIOS: Use GIGABYTE Q-Flash or @BIOS utility.

• Q-Flash: Allows quick and easy BIOS upgrade/backup without entering the OS.
• @BIOS: A Windows-based utility for downloading and updating BIOS from the Internet.

For instructions on Q-Flash and @BIOS, refer to the "Unique Features" page on GIGABYTE's website and search for "BIOS Update Utilities."

Warning: BIOS flashing is risky. Only flash the BIOS if necessary. Inadequate flashing may cause system malfunction. Avoid altering default settings unless required, as it may lead to system instability or boot failure. If issues occur, clear CMOS values and reset to defaults.

Refer to Chapter 2 for battery/clear CMOS jumper information or GIGABYTE's website for "Load Optimized Defaults."

Visit GIGABYTE's website for details on configuring BIOS Setup: https://www.gigabyte.com/WebPage/954/amd500-bios.html

Startup Screen:

The GIGABYTE logo screen appears when the computer boots.

A visual representation of the GIGABYTE startup screen with function key prompts.

Function Keys:

• <DEL>: BIOS SETUP\Q-FLASH - Enters BIOS Setup or Q-Flash utility.
• <F12>: BOOT MENU - Allows setting the first boot device without entering BIOS Setup. Settings are effective for one time only.
• <END>: Q-FLASH - Accesses Q-Flash utility directly.

Chapter 4 Installing the Operating System and Drivers

4-1 Operating System Installation

With correct BIOS settings, you are ready to install the operating system. Some operating systems include RAID drivers, eliminating the need for separate installation during Windows setup. After OS installation, install drivers from GIGABYTE APP Center for optimal performance and compatibility.

Installing RAID Driver (if required):

1. Go to GIGABYTE's website, download the AMD RAID Preinstall Driver from the Support\Download\SATA RAID/AHCI page.
2. Unzip the file and copy the files to a USB thumb drive.
3. Boot from the Windows setup disc and follow OS installation steps.
4. When prompted to load a driver, select Browse.
5. Insert the USB thumb drive, browse to the driver location, select "AMD-RAID Bottom Device", click Next.
6. Then select "AMD-RAID Controller" and click Next.
7. Continue the OS installation.

A screenshot of the Windows driver selection screen.

4-2 Drivers Installation

After OS installation, a dialog box may appear asking to download and install drivers and GIGABYTE applications via APP Center. Click Install to proceed. Ensure "APP Center Download & Install Configuration" is enabled in BIOS Setup.

Accept the End User License Agreement to install APP Center. Select desired drivers and applications in APP Center and click Install.

A screenshot of the GIGABYTE APP Center interface showing available updates.

Note: Ensure the system is connected to the Internet before installation.

For more software information, visit: https://www.gigabyte.com/WebPage/320/am4-app-center.html?m=sw

For troubleshooting information, visit: https://www.gigabyte.com/WebPage/351/faq.html

Chapter 5 Appendix

5-1 Configuring a RAID Set

RAID Levels:

Preparation:

• Prepare the correct number of hard drives as indicated in the table.
• Use SATA hard drives or SSDs. For optimal performance, use two drives with identical model and capacity.
• Windows setup disc.
• An internet-connected computer.
• A USB thumb drive.

Warning: An M.2 PCIe SSD cannot be used to set up a RAID set with a SATA hard drive.

Visit GIGABYTE's website for details on configuring a RAID array: https://www.gigabyte.com/WebPage/313/am4-raid.html?m=sw

Regulatory Notices

United States of America, Federal Communications Commission Statement

Supplier's Declaration of Conformity

Product Name: Motherboard
Trade Name: GIGABYTE
Model Number: B550M DS3H AC/B550M DS3H
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. Operation is subject to two conditions: (1) no harmful interference, and (2) acceptance of any interference received.

The FCC has adopted a safety standard for human exposure to radio frequency (RF) electromagnetic energy. Proper operation according to instructions will result in exposure substantially below FCC limits.

Safety Precautions:

• Do not touch or move antenna while transmitting or receiving.
• Do not hold components with the antenna close to the body while transmitting.
• Do not operate the radio or transmit data without antenna connected.
• Use in specific environments: Wireless device usage is limited in hazardous locations, on airplanes (FAA regulations), and in hospitals.

Antenna use: For FCC RF exposure limits, low gain integrated antennas should be at least 7.9 inches (20 cm) from the body.

Explosive Device Proximity Warning: Do not operate portable transmitters near unshielded blasting caps or in explosive environments unless qualified.

Antenna Warning: Wireless adapter not designed for high-gain antennas.

Use On Aircraft Caution: FCC and FAA regulations prohibit airborne operation of RF wireless devices due to potential interference with aircraft instruments.

Other Wireless Devices: Refer to documentation supplied with wireless Ethernet adapters or other devices.

Canada, Canada-Industry Notice:

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to two conditions: (1) no interference, and (2) acceptance of any interference.

Caution: IEEE 802.11a wireless LAN is restricted to indoor use in the 5.15-5.25 GHz frequency range to reduce potential interference to co-channel mobile satellite systems. High power radar systems in the 5.25-5.35 GHz and 5.65-5.85 GHz bands can cause interference. Maximum allowed antenna gain is 6dBi. Antennas should be at least 20cm from the body.

Industry Canada regulations state that this radio transmitter may only operate using an antenna approved by Industry Canada for type and maximum gain. Antenna type and gain should be chosen to minimize equivalent isotropically radiated power (e.i.r.p.) for successful communication.

European Union (EU) CE Declaration of Conformity

This device complies with the following EU directives: Electromagnetic Compatibility Directive 2014/30/EU, Low-voltage Directive 2014/35/EU, Radio Equipment Directive 2014/53/EU, ErP Directive 2009/125/EC, RoHS directive (recast) 2011/65/EU & the 2015/863 Statement. The product has been tested and found to comply with all essential requirements.

European Union (EU) RoHS (recast) Directive 2011/65/EU & the European Commission Delegated Directive (EU) 2015/863 Statement: GIGABYTE products are designed to be free from hazardous substances. Parts and components are carefully selected to meet RoHS requirements.

European Union (EU) Community Waste Electrical & Electronic Equipment (WEEE) Directive Statement: GIGABYTE fulfills national laws interpreting the WEEE Directive. Used equipment must be marked, collected separately, and disposed of properly.

WEEE Symbol Statement: The symbol indicates that this product must not be disposed of with household waste. Take it to waste collection centers for treatment, collection, recycling, and disposal.

Battery Information: The symbol indicates that this product and/or battery should not be disposed of with household waste. Use the public collection system for return, recycling, or treatment.

End of Life Directives-Recycling: The symbol indicates that this product must not be disposed of with other waste. Take it to waste collection centers for treatment, collection, recycling, and disposal.

Declarations of conformity in multiple languages (French, German, Portuguese, Spanish, Italian, Polish, Czech, Hungarian, Greek) are provided, confirming compliance with EU directives.

Wireless module approvals: Information on wireless module approvals from various regulatory bodies (FCC, ISED, ACMA, CMIIT, WPC, IMDA, TRA, CRA, etc.) for the Realtek Semiconductor Corp. RTL8821CE module.

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 question, visit https://esupport.gigabyte.com

A visual representation of the GIGABYTE eSupport welcome page.