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)
Check Before You Buy
- 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
Frequently Asked Questions
Q: Does this motherboard support DDR4 memory?
A: No, this motherboard only supports DDR5-SDRAM memory modules.
Q: Can I use this board for gaming without a dedicated GPU?
A: No, this motherboard does not include onboard graphics. A dedicated graphics card is required for gaming and video output.
Q: How many storage drives can I install?
A: You can install up to 6 drives total: 2 M.2 NVMe SSDs plus 4 SATA III drives (HDD or SSD).
Q: Is Wi-Fi included on this motherboard?
A: No, this model does not include built-in Wi-Fi. You’ll need to use the 2.5 Gb Ethernet connection or add a Wi-Fi adapter.
Q: Can I overclock my CPU with this motherboard?
A: Yes, this motherboard supports CPU overclocking for compatible AMD Ryzen processors.
The Consultant’s Verdict & Warranty
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 standard Manufacturer Warranty.
| Internal I/O | |
|---|---|
| Number of M.2 (M) slots | 2 |
| Front panel connector | Yes |
| Audio connector | Yes |
| 12V power connector | Yes |
| Supported storage drive interfaces | M.2, SATA III |
| 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 |
| Technical details | |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B650 |
| Supported processor sockets | Socket AM5 |
| Parallel processing technology support | Not supported |
| On-board graphics card | No |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio | |
| Audio output channels | 7.1 channels |
| Performance | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B650 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Expansion card interfaces | |
| Audio connector | Yes |
| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series |
| Supported processor sockets | Socket AM5 |
| Processor socket | Socket AM5 |
| Memory | |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Supported memory types | DDR5-SDRAM |
| 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 |
| Storage controllers | |
| 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 |
| Graphics | |
| Parallel processing technology support | Not supported |
| On-board graphics card | No |
| Rear panel I/O ports | |
| 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 |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | No |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Features | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B650 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Product colour | Black |
| Expansion slots | |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 3.x) slots | 3 |
| BIOS | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Clear CMOS button | Yes |
| Software | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Weight & dimensions | |
| Width | 244 mm |
| Depth | 244 mm |
| Packaging content | |
| Cables included | SATA |
| Identifiers | |
| Distributor SKUs | MBD-90MB1EH0-M0EAYC, W128338220, 479595, CL90MB1EH0-M0EAYC |

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