Motherboard - micro ATX - Socket AM5 - AMD B850 Chipset - USB 3.2 Gen 2, USB 3.2 Gen 1, USB-C 3.2 Gen 1 - 2.5 Gigabit LAN - onboard graphics (CPU required) - HD Audio (8-channel)
| Main Specifications | |
|---|---|
| Product Description | ASUS PRIME B850M-A-CSM - motherboard - micro ATX - Socket AM5 - AMD B850 |
| Product Type | Motherboard - micro ATX |
| Chipset Type | AMD B850 |
| Processor Socket | 1 x Socket AM5 |
| Compatible Processors | (supports Ryzen 7000/8000/9000 Series) |
| Max RAM Size | 256 GB |
| RAM Supported | 4 DIMM slots - DDR5, non-ECC, ECC, on-die ECC, unbuffered |
| Storage Ports | 4 x SATA-600 (RAID), 3 x M.2 |
| USB / FireWire Ports | 2 x USB 3.2 Gen 2 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 + (1 x USB-C 3.2 Gen 1 + 2 x USB 3.2 Gen 1 + 4 USB 2.0 via headers) |
| Audio | HD Audio (8-channel) |
| LAN | 2.5 Gigabit Ethernet |
| General | |
| Product Type | Motherboard - micro ATX |
| Chipset Type | AMD B850 |
| Processor Socket | Socket AM5 |
| Max Processors Qty | 1 |
| Compatible Processors | (supports Ryzen 7000/8000/9000 Series) |
| Expansion / Connectivity | |
| Expansion Slots | 1 x CPU ¦ 4 x DIMM 288-pin ¦ 1 x PCIe 5.0 x16 ¦ 1 x PCIe 4.0 x16 (x1 mode) ¦ 2 x M.2 socket (2280 M.2 Key M slot) ¦ 1 x M.2 socket (2242/2260/2280 M.2 Key M slot) |
| Storage Interfaces | SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 / RAID 5 ¦ PCIe 5.0 -connectors: 1 x M.2 - RAID 0 / RAID 1 / RAID 10 / RAID 5 ¦ PCIe 4.0 -connectors: 2 x M.2 - RAID 0 / RAID 1 / RAID 10 / RAID 5 |
| RAID Features | AMD RAID Xpert2 Technology |
| Interfaces | 1 x LAN (2.5Gigabit Ethernet) ¦ 1 x HDMI ¦ 2 x DisplayPort ¦ 2 x USB 3.2 Gen 2 ¦ 2 x USB 3.2 Gen 1 ¦ 4 x USB 2.0 ¦ 1 x audio line-out - mini-jack ¦ 1 x audio line-in - mini-jack ¦ 1 x microphone - mini-jack |
| Internal Interfaces | 1 x USB-C 3.2 Gen 1 - header ¦ 2 x USB 3.2 Gen 1 - header ¦ 4 x USB 2.0 - header ¦ 1 x SPDIF out - header ¦ 1 x SPI - header ¦ 1 x audio - header ¦ 1 x serial - header |
| Power Connectors | 24-pin main power connector, 8-pin ATX12V connector, 4-pin ATX12V connector |
| Miscellaneous | |
| Included Accessories | 1 x M.2 rubber package, 2 x M.2 screw package, ACC Express Activation Key Card |
| Cables Included | 2 x Serial ATA cable |
| Software Included | Armoury Crate, ASUS AURA Creator, ASUS Fan Xpert 2+, ASUS AI Advisor, TurboV Core, ASUS CPU-Z, Norton 360 Deluxe (60 days trial), WinRAR (40 days trial) |
| Compliant Standards | DisplayPort 1.4 |
| Width | 9.6 in |
| Depth | 9.6 in |
| Audio | |
| Type | HD Audio (8-channel) |
| Compliant Standards | High Definition Audio |
| Features | |
| BIOS Type | AMI |
| BIOS Features | UEFI BIOS, ASUS EZ Flash 3, ASUS UEFI BIOS EZ Mode |
| Sleep / Wake Up | Wake on LAN (WOL), wake on PME |
| Hardware Features | ASUS Enhanced Memory Profile (AEMP), CrashFree BIOS 3, Preboot eXecution Environment (PXE), LANGuard, ASUS 5X Protection III, BIOS FlashBack button, ASUS DIGI+ VRM, ASUS Overvoltage Protection, ASUS SafeSlot, ASUS Q-Design, ASUS Stainless Steel Back I/O, ASUS Aura Sync, ASUS EZ DIY, BIOS FlashBack LED, M.2 heatsink, Q-Dashboard, Q-DIMM, Q-LED Core, Q-Slot, VRM heatsink design, 6 Layer PCB, 8+2+1 Phase Power Design, AI Cache Boost, chipset heatsink, pre-mounted I/O shield |
| LAN | |
| Network Interfaces | 2.5 Gigabit Ethernet |
| Supported RAM | |
| Max Size | 256 GB |
| Technology | DDR5 |
| Bus Clock | 8000 MT/s (O.C.) |
| Supported RAM Integrity Check | Non-ECC, ECC, on-die ECC |
| Registered or Buffered | Unbuffered |
| Features | Dual channel memory architecture, AMD EXPO technology |