Introduction
This manual provides detailed instructions for the installation, configuration, and operation of your ASUS Prime B650M-A II-CSM Micro-ATX motherboard. Designed for AMD Ryzen 7000, 8000, and 9000 series processors, this motherboard offers robust performance and connectivity features. Please read this manual thoroughly before beginning the installation process.
Image: The ASUS Prime B650M-A II-CSM motherboard alongside its retail packaging, showcasing the product's design and branding.
Setup and Installation
Follow these steps carefully to ensure proper installation of your motherboard and its components.
1. CPU Installation (Socket AM5)
The ASUS Prime B650M-A II-CSM motherboard uses the AM5 socket, compatible with AMD Ryzen 7000, 8000, and 9000 series processors.
- Locate the CPU socket on the motherboard.
- Open the CPU retention lever and lift the load plate.
- Carefully align the triangular mark on the CPU with the corresponding mark on the socket.
- Gently place the CPU into the socket without applying force.
- Close the load plate and secure it with the retention lever.
Image: A detailed top-down view of the ASUS Prime B650M-A II-CSM motherboard, highlighting the AM5 CPU socket and surrounding components.
2. Memory Installation (DDR5)
This motherboard supports DDR5 memory modules. Refer to your motherboard's QVL (Qualified Vendor List) for compatible memory.
- Open the clips at both ends of the DIMM slot.
- Align the notch on the DDR5 memory module with the key in the DIMM slot.
- Press down firmly on both ends of the memory module until the clips snap into place.
3. Storage Installation (M.2 and SATA)
The motherboard features M.2 PCIe 5.0 slots and SATA 6Gb/s ports for storage devices.
- M.2 SSD: Locate the M.2 slots. Remove the M.2 screw or stand-off. Insert the M.2 SSD into the slot at an angle, then gently push it down and secure it with the screw or stand-off.
- SATA Drives: Connect SATA data cables from your storage devices (HDDs/SSDs) to the SATA 6Gb/s ports on the motherboard. Connect SATA power cables from your power supply to the drives.
Image: A diagram of the motherboard indicating the locations of the PCIe 5.0 M.2 slots, crucial for high-speed storage.
4. Power Connections
Connect the main 24-pin ATX power connector and the 8-pin CPU power connector from your power supply to the corresponding ports on the motherboard.
5. Front Panel Connections
Connect your PC case's front panel headers (power button, reset button, HDD LED, power LED, USB ports, audio jacks) to the corresponding pins on the motherboard. Refer to the motherboard manual for exact pin layouts.
Image: A close-up view of the USB 3.2 Gen 1 Type-C front panel header, enabling modern case connectivity.
6. BIOS Flashback
The BIOS Flashback feature allows you to update the UEFI BIOS without a CPU or memory installed. This is particularly useful for ensuring compatibility with newer processors.
- Download the latest BIOS file from the ASUS support website for your motherboard model.
- Rename the downloaded BIOS file according to the instructions on the ASUS support page (usually to a specific filename like "MB.CAP").
- Copy the renamed BIOS file to the root directory of a FAT32 formatted USB flash drive.
- Insert the USB flash drive into the dedicated BIOS Flashback USB port on the motherboard's rear I/O panel.
- Press the BIOS Flashback button. The LED will flash, indicating the update process has started.
- Wait until the LED stops flashing, which signifies the completion of the BIOS update.
Image: The rear I/O panel of the motherboard, showing various ports including USB, Ethernet, audio jacks, and the dedicated BIOS Flashback port.
Operating Instructions
1. Initial Boot and BIOS/UEFI Configuration
Upon the first power-on, the system will typically enter the UEFI BIOS utility.
- Press Del or F2 during POST (Power-On Self-Test) to enter the BIOS setup.
- The ASUS UEFI BIOS offers an intuitive interface for system configuration.
- Configure boot order, enable/disable features, and adjust system settings as needed.
Image: The ASUS UEFI BIOS Utility in EZ Mode, providing an overview of system status and easy access to common settings.
2. Driver Installation
After installing your operating system, install the necessary drivers for the motherboard components.
- Use the provided support DVD or download the latest drivers from the ASUS support website.
- Install chipset drivers, LAN drivers, audio drivers, and any other peripheral drivers.
3. ASUS Control Center Express (ACCE)
ASUS Control Center Express (ACCE) is a centralized IT management software designed to simplify endpoint management for businesses. Download and install ACCE from the ASUS website for enhanced system control and monitoring.
4. Aura Sync RGB Lighting
The motherboard features onboard Addressable Gen 2 headers and an Aura RGB header for connecting RGB LED strips. These can be synchronized with other Aura Sync-capable hardware using the ASUS Aura Sync software.
Image: The ASUS Prime B650M-A II-CSM motherboard, illustrating its compatibility with Aura Sync RGB lighting for customizable aesthetics.
Maintenance
1. BIOS Updates
Regularly updating your motherboard's BIOS is crucial for system stability, performance improvements, and compatibility with new hardware.
- Always download BIOS updates directly from the official ASUS support website for your specific model.
- Use the BIOS Flashback feature or the EZ Flash utility within the BIOS for safe updating.
- Ensure a stable power supply during the update process to prevent data corruption.
2. Cleaning
Keep your motherboard and PC case free from dust to ensure optimal cooling and longevity.
- Power off and unplug your computer before cleaning.
- Use compressed air to remove dust from heatsinks, fans, and other components.
- Avoid using liquid cleaners directly on the motherboard.
Troubleshooting
If you encounter issues, consider the following common troubleshooting steps:
- No Power/No Boot:
- Verify all power cables (24-pin ATX, 8-pin CPU) are securely connected.
- Ensure the power supply is switched on.
- Check front panel connections for power button.
- Test with minimal components (CPU, one RAM stick, GPU if no integrated graphics).
- Display Issues:
- Ensure monitor cables are securely connected to the correct output (motherboard or discrete GPU).
- If using integrated graphics, ensure your CPU supports it.
- System Instability/Crashes:
- Update BIOS to the latest version. Older BIOS versions might have stability issues or over-voltage concerns with certain CPUs.
- Check RAM seating and test memory modules individually.
- Monitor CPU and system temperatures.
- Peripheral Not Detected:
- Ensure drivers are installed.
- Check physical connections.
- Test the peripheral in a different port or system if possible.
Specifications
Key technical specifications for the ASUS Prime B650M-A II-CSM motherboard:
| Feature | Specification |
|---|---|
| Brand | ASUS |
| Model Name | PRIME B650M-A II-CSM |
| CPU Socket | Socket AM5 |
| Compatible Processors | AMD Ryzen™ 7000, 8000, 9000 Series |
| Chipset Type | AMD B650 |
| RAM Memory Technology | DDR5 |
| Memory Speed | Up to 4400 MHz (OC support for higher speeds) |
| M.2 Slots | 2 (PCIe 5.0 support) |
| Ethernet | Realtek 2.5Gb Ethernet |
| USB Ports | USB 3.2 Gen 2, USB 3.2 Gen 1 Type-C (front header), USB 2.0 |
| Video Outputs | DisplayPort, HDMI®, VGA |
| Form Factor | Micro-ATX |
| Dimensions (LxWxH) | 11 x 2.7 x 11 inches |
| Item Weight | 2.65 pounds |
Warranty and Support
For detailed warranty information, please refer to the warranty card included with your product or visit the official ASUS website.
For technical support, driver downloads, and further documentation, please visit the ASUS support page for your model:ASUS Support Website
A PDF version of the user guide is also available:Download User Guide (PDF)
