MAXSUN B850M ITX Motherboard User Manual

1. Introduction

The MAXSUN B850M ITX Motherboard is a high-performance, compact solution designed for AMD Socket AM5 processors, supporting the latest DDR5 memory technology. This manual provides essential information for the proper installation, operation, and maintenance of your motherboard, ensuring optimal performance and longevity.

2. Setup and Installation

Before beginning installation, ensure your system is powered off and unplugged from the wall outlet. Always handle the motherboard by its edges to avoid static discharge. It is recommended to wear an anti-static wrist strap.

2.1 Component Overview

2.2 CPU Installation

1. Locate the Socket AM5 on the motherboard.
2. Open the CPU retention lever.
3. Carefully align your AMD Ryzen 7000/8000/9000 Series processor with the socket, ensuring the golden triangle on the CPU matches the indicator on the socket.
4. Gently place the CPU into the socket without forcing it.
5. Close the retention lever to secure the CPU.
6. Install your CPU cooler according to its manufacturer's instructions.

2.3 Memory (RAM) Installation

1. The motherboard has two DDR5 DIMM slots. For dual-channel performance, install memory modules in both slots.
2. Open the clips at both ends of the DIMM slot.
3. Align the notch on the DDR5 memory module with the key in the DIMM slot.
4. Press down firmly on both ends of the memory module until the clips snap into place.

2.4 Storage Device Installation

2.4.1 M.2 SSD Installation

The motherboard features two M.2 slots supporting 2242/2280 PCIe 4.0 x4/x2 SSDs.

1. Locate the M.2 slots on the motherboard.
2. Remove the M.2 heatsink (if present) and the M.2 standoff screw.
3. Insert the M.2 SSD into the slot at an angle.
4. Gently push down the SSD and secure it with the standoff screw.
5. Reinstall the M.2 heatsink (if applicable).

2.4.2 SATA Drive Installation

Connect SATA data cables from your SATA drives (HDDs/SSDs) to the two SATA 3.0 ports on the motherboard. Ensure power cables from your power supply are connected to the drives.

2.5 Expansion Card Installation (PCIe)

The motherboard has one PCIe 5.0 x16 slot for graphics cards or other expansion cards.

1. Align your expansion card with the PCIe x16 slot.
2. Press down firmly until the card is seated correctly and the retention clip locks.
3. Secure the card to your chassis with a screw.

2.6 Power Connections

1. Connect the 24-pin ATX main power connector from your power supply to the corresponding header on the motherboard.
2. Connect the 8-pin ATX 12V power connector (CPU power) to its header near the CPU socket.

2.7 Front Panel and Other Connections

Connect your chassis' front panel connectors (power button, reset button, USB ports, audio jacks) to the corresponding headers on the motherboard. Refer to your chassis manual for specific pin assignments. Connect system fan headers, CPU fan header, COM A header, and RGB headers as needed.

2.8 Rear I/O Panel Connections

Connect your peripherals to the rear I/O ports:

• Display Outputs: HDMI, DisplayPort for integrated graphics (if using an APU).
• USB Ports: Connect USB devices to the available USB 3.2 Gen 1 and USB 2.0 ports.
• Network: Connect an Ethernet cable to the 2.5G RJ45 port. Attach the WiFi antennas to the designated connectors for wireless connectivity.
• Audio: Connect speakers or headphones to the audio jacks.

3. Operating Instructions

3.1 First Boot and BIOS Setup

1. After all components are installed and connected, power on your system.
2. Press the designated key (usually DEL or F2) during startup to enter the BIOS/UEFI setup utility.
3. Configure boot order, system time, and other essential settings. Save changes and exit.
4. Install your operating system.

3.2 Network Connectivity

The motherboard features an integrated Realtek 8125BG/D 2.5G LAN chip for high-speed wired networking and an onboard Realtek 8852BE WiFi 6 module with Bluetooth 5.2 for wireless connectivity. Ensure appropriate drivers are installed for optimal performance.

3.3 RGB Lighting Control

Utilize the MAXSUN Sync lighting software to customize the RGB lighting effects of compatible components connected to the 5V ARGB and 12V RGB headers on the motherboard. This allows for personalized aesthetics and synchronization across your system.

4. Maintenance

4.1 Cleaning

Regularly clean your computer's interior to prevent dust buildup, which can lead to overheating and reduced performance. Use compressed air to remove dust from heatsinks, fans, and other components. Ensure the system is powered off and unplugged before cleaning.

4.2 Driver and BIOS Updates

Keep your motherboard drivers and BIOS (Basic Input/Output System) updated to ensure compatibility, stability, and access to the latest features. Visit the MAXSUN official website for the most recent downloads. Follow the provided instructions carefully when updating the BIOS.

5. Troubleshooting

This section provides solutions to common issues you might encounter.

5.1 No Power / No Boot

• Ensure all power cables (24-pin ATX, 8-pin ATX 12V) are securely connected to the motherboard and power supply.
• Verify that the power supply is switched on and the wall outlet is functional.
• Check front panel connections (power button).
• Try clearing the CMOS by either removing the CMOS battery for a few minutes or using the 'Clear CMOS' button/jumper if available.

5.2 No Display Output

• Ensure your monitor is connected to the correct display output (either on your graphics card or the motherboard's integrated graphics ports if using an APU).
• Reseat your graphics card and memory modules.
• Test with a different display cable or monitor if possible.

5.3 Network Connectivity Issues

• For wired connections, ensure the Ethernet cable is properly connected and the router/modem is working.
• For wireless connections, ensure WiFi antennas are securely attached and drivers are installed.
• Check network adapter settings in your operating system.

5.4 System Instability / Crashes

• Ensure all drivers are up to date.
• Check CPU and GPU temperatures to rule out overheating.
• Run memory diagnostic tools to check for faulty RAM.
• Verify power supply wattage is sufficient for all components.

6. Specifications

7. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your proof of purchase for warranty claims.

8. User Tips

• Cable Management: Proper cable management improves airflow and aesthetics. Plan your cable routing before securing components.
• Static Prevention: Always ground yourself before handling internal components to prevent electrostatic discharge (ESD) damage.
• BIOS Updates: While important, BIOS updates should only be performed when necessary and with caution. Ensure a stable power supply during the update process.
• Cooling: Ensure adequate cooling for your CPU and other components, especially when overclocking, to maintain system stability and longevity.
• Driver Installation Order: Install chipset drivers first, followed by graphics, audio, and network drivers for best results.