# ASUS Prime B650M-A-CSM Micro-ATX Commercial Motherboard, DDR5, PCIe 5.0 M.2 Support

- Category: Motherboard
- Brand: ASUS
- Model: PRIME B650M-A-CSM
- Part number: PRIME B650M-A-CSM
- Price (US): currently unavailable
- Price last checked: 2026-08-06
- Rating: 4.6/5 from 1398 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/motherboard/asus-prime-b650m-a-csm/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | ASUS |
| Model | PRIME B650M-A-CSM |
| Socket Type | AM5 |
| Chipset | AMD B650 |
| Form Factor | Micro ATX |
| Memory Type | 4 x DDR5 |
| Max Memory Support | 128 GB |

## Key Features

- AMD AM5 Socket: Ready for AMD Ryzen 7000 Series Desktop Processors
- Ultrafast Connectivity: M.2 PCIe 5.0, Realtek 2.5Gb Ethernet, USB 3.2 Gen 2 ports, front USB 3.2 Gen 1 Type-C
- ASUS OptiMem II: Careful routing of traces and vias, plus ground layer optimizations to preserve signal integrity for improved memory overclocking
- Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+
- Aura Sync RGB Lighting: Onboard Addressable Gen 2 headers and Aura RGB header for RGB LED strips, easily synced with Aura Sync-capable hardware

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