ASUS PRIME B650M-A II-CSM micro ATX motherboard
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About This Item
- Micro ATX motherboard with AMD B650 chipset for AMD Ryzen 7000 series processors
- Supports DDR5-SDRAM with dual-channel architecture and up to 128GB maximum memory
- Features 2 M.2 slots and 4 SATA III connectors for versatile storage options
- Includes 2.5 Gigabit Ethernet and comprehensive audio with 7.1 channels
- Offers 3 PCIe x16 Gen 3.x slots and multiple USB ports including USB 3.2 Gen 2
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ASUS PRIME B650M-A II-CSM | Compact AMD B650 mATX Powerhouse
The ASUS PRIME B650M-A II-CSM AMD B650 Socket AM5 micro ATX motherboard delivers robust performance for AMD Ryzen 7000-series builds in a space-saving form factor. Engineered with comprehensive cooling, flexible tuning options, and next-gen connectivity, this micro ATX board is ideal for gamers and creators seeking reliable performance without compromising on expandability.
Key Specifications
| Metric | Spec |
|---|---|
| Socket | AMD AM5 |
| Memory Support | DDR5, up to 6400 MHz |
| PCIe Slots | 3x PCIe 3.0 x16 |
| M.2 Slots | 2x M.2 (NVMe) |
| Ethernet | 2.5 Gb LAN |
| Form Factor | micro ATX (244 x 244 mm) |
Next-Gen Performance for AMD Ryzen 7000
Built specifically for AMD’s AM5 platform, this motherboard supports the latest Ryzen 7000 processors with unlocked overclocking capabilities. The robust power delivery system ensures stable operation even under heavy workloads, while AMD EXPO™ technology allows enthusiasts to push DDR5 memory beyond standard speeds for enhanced system responsiveness.
Intelligent Cooling for Sustained Performance
PRIME B650M-A II-CSM features comprehensive thermal management with multiple VRM heatsinks and hybrid fan headers. The Fan Xpert 2+ software provides granular control over system temperatures, allowing you to map GPU temperatures for optimized cooling during gaming sessions. Three chassis fan connectors with PWM/DC auto-detection ensure your components stay cool under pressure.
Future-Proof Connectivity
With two M.2 slots supporting the latest NVMe SSDs, you’ll experience lightning-fast storage speeds. The 2.5 Gb Ethernet connection provides reliable networking performance, while multiple USB ports (including USB 3.2 Gen 2) offer versatile peripheral connectivity. HDMI and DisplayPort outputs enable multi-monitor setups without requiring a dedicated graphics card.
Enhanced Audio Experience
ASUS has incorporated premium audio components into this motherboard, delivering 7.1 channel surround sound through high-quality onboard audio. Whether you’re gaming, streaming, or creating content, you’ll appreciate the clarity and depth of the audio output, making this board suitable for both entertainment and professional applications.
Box Contents
- ASUS PRIME B650M-A II-CSM motherboard
- SATA cables (quantity not specified)
- I/O shield
- User manual and warranty documents
- Support DVD (if applicable)
Before You Order
- Confirm your AMD Ryzen 7000-series processor is compatible with AM5 socket
- Verify your case supports micro ATX (244 x 244 mm) dimensions
- Check if your GPU will fit alongside other components given the PCIe layout
- Ensure you have DDR5 memory modules, as DDR4 is not supported
Questions and answers
Does this motherboard support DDR4 memory?
Can I use this board for gaming without a dedicated GPU?
How many storage drives can I install?
Is Wi-Fi included on this motherboard?
Can I overclock my CPU with this motherboard?
Why we rate it
The ASUS PRIME B650M-A II-CSM represents excellent value for users building AMD AM5 systems who need reliable performance in a compact micro ATX package. Its robust power delivery, comprehensive cooling solutions, and support for the latest DDR5 memory make it suitable for both gaming and content creation workloads. The 2.5 Gb Ethernet and multiple M.2 slots ensure your system remains relevant as storage and networking demands increase. Covered by the applicable manufacturer warranty.
| Front panel connector | Yes |
|---|---|
| 12V power connector | Yes |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 3.1 Gen 1 connectors | 2 |
| TPM connector | Yes |
| Number of SATA III connectors | 4 |
| Number of COM connectors | 1 |
| Number of chassis fan connectors | 3 |
| Front panel audio connector | Yes |
| CPU fan connector | Yes |
| ATX Power connector 24-pin | Yes |
| RGB LED pin header | Yes |
| Audio connector | Yes |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series |
| Processor socket | Socket AM5 |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| Supported memory clock speeds | 4800,5000,5200,5400,5600,5800,6000,6200,6400 MHz |
| Maximum internal memory | 128 GB |
| Unbuffered memory | Yes |
| Supported memory clock speed max | 6400 MHz |
| ECC сompatibility | ECC & Non-ECC |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| Parallel processing technology support | Not supported |
| On-board graphics card | No |
| USB 3.2 Gen 1 3.1 Gen 1 Type-A ports quantity | 2 |
| USB 3.2 Gen 2 3.1 Gen 2 Type-A ports quantity | 2 |
| USB 2.0 ports quantity | 4 |
| PS/2 ports quantity | 1 |
| Microphone in | Yes |
| Headphone outputs | 1 |
| HDMI ports quantity | 1 |
| Ethernet LAN RJ-45 ports | 1 |
| DisplayPorts quantity | 1 |
| Line-in | Yes |
| Motherboard chipset family | AMD |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Component for | PC |
| Product colour | Black |
| Number of M.2 M slots | 2 |
| PCI Express x16 Gen 3.x slots | 3 |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Clear CMOS button | Yes |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Width | 244 mm |
| Depth | 244 mm |
| Cables included | SATA |
| Distributor SKUs | MBD-90MB1EH0-M0EAYC, W128338220, 479595, CL90MB1EH0-M0EAYC |







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