Unlock the Full Potential of AMD Ryzen™ 9000 Series with ASUS PRIME B840M-A-CSM
The ASUS PRIME B840M-A-CSM is a micro-ATX motherboard expertly engineered to support AMD Ryzen™ 9000, 8000, and 7000 series processors. With robust power design, DDR5 memory support, and advanced connectivity options including PCIe 4.0 and three M.2 slots, this board is built for next-gen performance. It is also part of the ASUS Corporate Stable Model (CSM) program, offering extended product lifecycle support and integrated IT management via ASUS Control Center Express, making it ideal for business and enterprise environments.
- AMD B840 chipset, AM5 socket (micro-ATX)
- Advanced AI PC-ready features
- Supports DDR5 memory up to 7600+ MT/s (OC)
- PCIe 4.0 and triple M.2 slots
- Realtek 2.5Gb Ethernet
- Dual DisplayPort + HDMI
- Rear and front USB Type-C (5Gbps)
- BIOS FlashBack™ support
- Aura Sync and addressable Gen 2 RGB headers
- EZ DIY features: Q-LED Core, Pre-Mounted I/O Shield
Specifications
| Form Factor | Micro ATX |
| Socket | AMD AM5 |
| Chipset | AMD B840 |
| Memory | DDR5, Dual Channel, ECC/Non-ECC Un-buffered DIMM |
| Max Memory | 256GB (4 x DIMM, up to 7600+ MT/s OC) |
| CPU Support | View supported CPUs |
| Integrated Graphics | Depends on CPU; 1 x HDMI, 2 x DisplayPort |
| Expansion Slots | Ryzen 9000/7000: 1 x PCIe 4.0 x16 (x16 mode) Ryzen 8000: 1 x PCIe 4.0 x16 (x8/x4 mode) Chipset: 2 x PCIe 3.0 x16 (x1 mode) |
| Storage | 4 x SATA III 3 x M.2 Slots: Ryzen 9000/7000: M.2_1 & M.2_2 (PCIe 4.0 x4) Ryzen 8000: M.2_1 (PCIe 4.0 x4), M.2_2 (PCIe 4.0 x4/x2) Chipset: M.2_3 (PCIe 3.0 x4) |
| RAID Support | AMD RAIDXpert2: RAID 0/1/5/10 (Ryzen 9000), RAID 0/1 (8000), RAID 0/1/10 (7000) |
| LAN | Realtek 2.5Gb Ethernet |
| Audio | Realtek 7.1 Surround Sound HD Audio CODEC |
| Rear I/O | 2 x USB 10Gbps Type-A 1 x USB 5Gbps Type-C 4 x USB 2.0 2 x DisplayPort, 1 x HDMI 3 x Audio jacks, 1 x BIOS FlashBack button 1 x 2.5Gb Ethernet |
| Front I/O | 1 x USB 5Gbps Type-C 2 x USB 5Gbps 4 x USB 2.0 |
| Internal Connectors | 3 x M.2 (Key M) 4 x SATA 6Gb/s 1 x USB 5Gbps Type-C, 1 x USB 5Gbps, 2 x USB 2.0 3 x Addressable Gen 2 RGB headers 1 x Clear CMOS, 1 x COM, S/PDIF Out, TPM, Front Audio |
| Cooling | 1 x CPU Fan, 1 x CPU OPT, 2 x Chassis Fans ASUS Fan Xpert 2+ with Extreme Quiet & Auto-Tuning |
| RGB & Customization | Aura Sync RGB Addressable Gen 2 RGB headers Armoury Crate, ASUS GlideX, DriverHub |
| DIY Features | Q-LED Core, Pre-Mounted I/O Shield, BIOS FlashBack™, SafeSlot Core+ |
| Accessories | 2 x SATA cables, 1 x M.2 rubber package 2 x M.2 screw sets 1 x ACC Express Key Card Quick Start Guide |
| Warranty | 3 Years |
| Package Weight | 1.45 kg |
