MSI PRO B840M-B. Processor manufacturer: AMD, Processor socket: Socket AM5, Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported memory types: DDR5-SDRAM, Maximum internal memory: 128 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, Micro SATA III, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 10. Ethernet interface type: 2.5 Gigabit Ethernet, LAN controller: Realtek RTL8125D. Component for: PC, Motherboard form factor: micro ATX, Motherboard chipset family: AMD
| Processor manufacturer | AMD |
| Processor socket | Socket AM5 |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Supported processor sockets | Socket AM5 |
| Supported memory types | DDR5-SDRAM |
| Number of memory slots | 2 |
| Maximum internal memory | 128 GB |
| Memory slots type | DIMM |
| Memory channels | Dual-channel |
| ECC сompatibility | Non-ECC |
| Supported memory clock speeds | 4800,5600,8000 MHz |
| Supported memory clock speed (max) | 8000 MHz |
| Supported storage drive interfaces | M.2, Micro SATA III |
| Supported storage drive types | HDD & SSD |
| Number of HDDs supported | 4 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| RAID levels | 0, 1, 10 |
| On-board graphics card | No |
| USB 2.0 connectors | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| Number of SATA III connectors | 4 |
| Number of SATA II connectors | 0 |
| Number of SATA connectors | 0 |
| Number of SATA Express connectors | 0 |
| Total number of SATA connectors | 4 |
| Number of CPU fan connectors | 1 |
| Number of chassis fan connectors | 5 |
| Number of water pump connectors | 1 |
| RGB LED pin header | Yes |
| Number of RGB LED pin headers | 3 |
| USB 2.0 ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 1 |
| VGA (D-Sub) ports quantity | 0 |
| HDMI ports quantity | 1 |
| DVI-D ports quantity | 0 |
| HDMI version | 2.1 |
| Wi-Fi | No |
| Ethernet LAN | Yes |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| LAN controller | Realtek RTL8125D |
| Component for | PC |
| Motherboard form factor | micro ATX |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| Audio output channels | 7.1 channels |
| Audio chip | Realtek ALC897 |
| Product color | Black |
| Windows operating systems supported | Windows 11 x64 |
| PCI Express x16 slots | 2 |
| Number of M.2 (M) slots | 2 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| ACPI version | 6.5 |
| System Management BIOS (SMBIOS) version | 3.7 |
| Width | 8.9" (226 mm) |
| Depth | 9.6" (243.8 mm) |
| mSATA ports quantity | 0 |
