The Story
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be an Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
Specifications:
| Model | PRIME B850M-A-CSM |
| CPU Support | AMD Socket AM5 for Ryzen 9000, 8000, 7000 Series |
| Chipset | AMD B850 |
| Memory | 4 x DDR5 DIMM, up to 256GB Up to 8000+ MT/s (OC) ECC & Non-ECC un-buffered EXPO and AEMP support |
| Graphics Outputs | 2 x DisplayPort, 1 x HDMI |
| Expansion Slots | Ryzen 9000/7000: 1 x PCIe 5.0 x16 Ryzen 8000: 1 x PCIe 4.0 x16 (x8/x4 mode) Chipset: 1 x PCIe 4.0 x16 (x1 mode) |
| Storage | 3 x M.2 slots 4 x SATA 6Gb/s ports RAID 0/1/5/10 (depends on CPU) |
| Networking | Realtek 2.5Gb Ethernet, ASUS LANGuard |
| USB Ports | Rear: 2 x USB 10Gbps, 2 x USB 5Gbps, 4 x USB 2.0 Front: 1 x USB-C 5Gbps, 1 x USB 5Gbps header, 2 x USB 2.0 headers |
| Audio | Realtek 7.1 Surround HD Audio CODEC Audio shielding, premium capacitors |
| Back Panel I/O | 8 x USB ports 2 x DP, 1 x HDMI 1 x LAN, 3 x Audio jacks BIOS FlashBack™ button |
| Internal I/O | Power: 24-pin ATX, 8-pin +12V, 4-pin +12V Cooling: CPU/AIO/Chassis fan headers RGB: 3 x Addressable RGB Gen 2 Misc: TPM, COM, S/PDIF, Clear CMOS, etc. |
| Special Features | ASUS 5X PROTECTION III, Q-Design BIOS FlashBack™, Aura Sync RGB M.2 & VRM heatsinks, Pre-mounted I/O shield |
| Software | Armoury Crate, AI Advisor, ASUS CPU-Z Norton 360 (60-day), WinRAR (40-day) |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Manageability | WOL by PME, PXE |
| Accessories | 2 x SATA cables, M.2 rubber & screws Quick start guide, ACC key card |
| OS Support | Windows 11, Windows 10 64-bit |
| Form Factor | mATX (24.4 x 24.4 cm) |
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be an Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
Specifications:
| Model | PRIME B850M-A-CSM |
| CPU Support | AMD Socket AM5 for Ryzen 9000, 8000, 7000 Series |
| Chipset | AMD B850 |
| Memory | 4 x DDR5 DIMM, up to 256GB Up to 8000+ MT/s (OC) ECC & Non-ECC un-buffered EXPO and AEMP support |
| Graphics Outputs | 2 x DisplayPort, 1 x HDMI |
| Expansion Slots | Ryzen 9000/7000: 1 x PCIe 5.0 x16 Ryzen 8000: 1 x PCIe 4.0 x16 (x8/x4 mode) Chipset: 1 x PCIe 4.0 x16 (x1 mode) |
| Storage | 3 x M.2 slots 4 x SATA 6Gb/s ports RAID 0/1/5/10 (depends on CPU) |
| Networking | Realtek 2.5Gb Ethernet, ASUS LANGuard |
| USB Ports | Rear: 2 x USB 10Gbps, 2 x USB 5Gbps, 4 x USB 2.0 Front: 1 x USB-C 5Gbps, 1 x USB 5Gbps header, 2 x USB 2.0 headers |
| Audio | Realtek 7.1 Surround HD Audio CODEC Audio shielding, premium capacitors |
| Back Panel I/O | 8 x USB ports 2 x DP, 1 x HDMI 1 x LAN, 3 x Audio jacks BIOS FlashBack™ button |
| Internal I/O | Power: 24-pin ATX, 8-pin +12V, 4-pin +12V Cooling: CPU/AIO/Chassis fan headers RGB: 3 x Addressable RGB Gen 2 Misc: TPM, COM, S/PDIF, Clear CMOS, etc. |
| Special Features | ASUS 5X PROTECTION III, Q-Design BIOS FlashBack™, Aura Sync RGB M.2 & VRM heatsinks, Pre-mounted I/O shield |
| Software | Armoury Crate, AI Advisor, ASUS CPU-Z Norton 360 (60-day), WinRAR (40-day) |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Manageability | WOL by PME, PXE |
| Accessories | 2 x SATA cables, M.2 rubber & screws Quick start guide, ACC key card |
| OS Support | Windows 11, Windows 10 64-bit |
| Form Factor | mATX (24.4 x 24.4 cm) |
