Motherboard - micro ATX - Socket AM5 - AMD B840 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 | MSI PRO B840M-B - motherboard - micro ATX - Socket AM5 - AMD B840 |
| Product Type | Motherboard - micro ATX |
| Chipset Type | AMD B840 |
| Processor Socket | 1 x Socket AM5 |
| Compatible Processors | Ryzen (supports Ryzen 7000/8000/9000 Series) |
| Max RAM Size | 128 GB |
| RAM Supported | 2 DIMM slots - DDR5, non-ECC, on-die ECC, unbuffered |
| Storage Ports | 4 x SATA-600 (RAID), 2 x M.2 |
| USB / FireWire Ports | 4 x USB 3.2 Gen 1 + 2 x USB 2.0 + (1 x USB-C 3.2 Gen 1 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers) |
| Audio | HD Audio (8-channel) |
| LAN | 2.5 Gigabit Ethernet |
| General | |
| Product Type | Motherboard - micro ATX |
| Chipset Type | AMD B840 |
| Processor Socket | Socket AM5 |
| Max Processors Qty | 1 |
| Compatible Processors | Ryzen (supports Ryzen 7000/8000/9000 Series) |
| Expansion / Connectivity | |
| Expansion Slots | 1 x CPU ¦ 2 x DIMM 288-pin ¦ 1 x PCIe 4.0 x16 ¦ 1 x PCIe 3.0 x1 ¦ 2 x M.2 socket (2260/2280 M.2 Key M slot) |
| Storage Interfaces | SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 ¦ PCIe 4.0 -connectors: 2 x M.2 - RAID 0 / RAID 1 |
| Interfaces | 1 x HDMI ¦ 1 x VGA ¦ 1 x LAN (2.5Gigabit Ethernet) ¦ 2 x USB 2.0 ¦ 4 x USB 3.2 Gen 1 ¦ 1 x microphone - mini-jack ¦ 1 x audio line-in - mini-jack ¦ 1 x audio line-out - 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 audio - header ¦ 1 x serial - header ¦ 1 x SPI - header |
| Power Connectors | 24-pin main power connector, 8-pin ATX12V connector |
| Miscellaneous | |
| Included Accessories | 2 x EZ M.2 clip II, EZ M.2 clip II remover |
| Cables Included | 1 x Serial ATA cable |
| Width | 9.6 in |
| Depth | 8.9 in |
| Audio | |
| Type | HD Audio (8-channel) |
| Audio Codec | Realtek ALC897 |
| Compliant Standards | High Definition Audio |
| Features | |
| BIOS Type | AMI |
| BIOS Features | MSI ClickBIOS |
| Hardware Features | 7+2+1 Phase Power Design, Frozr AI Cooling, MSI AI Engine, MSI Companion, MSI LAN Manager, EZ PCie Clip II, EZ M.2 Clip II, EZ Debug LED, MSI Core Boost, MSI Audio Boost, MSI Memory Boost, ESD Protection, 6 Layer PCB, 2oz Copper PCB, Surface Mount Technology (SMT), transient voltage suppressors, MSI Stainless Steel Back I/O, pre-mounted I/O shield, CUDIMM support, chipset heatsink, MSI Mystic Light |
| LAN | |
| Network Controller | Realtek RTL8125D |
| Network Interfaces | 2.5 Gigabit Ethernet |
| Supported RAM | |
| Max Size | 128 GB |
| Technology | DDR5 |
| Bus Clock | 4800 MT/s, 5600 MT/s, 5600 MT/s (O.C.), 7200 MT/s (O.C.), 8000 MT/s (O.C.) |
| Supported RAM Integrity Check | Non-ECC, on-die ECC |
| Registered or Buffered | Unbuffered |
| Features | AMD EXPO technology, dual channel memory architecture |