The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.
MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.
DIRECT 7+2+1 POWER DESIGN
Unleash and sustain the maximum performance with a VRM design built with a total of 7+2+1 digital power phases. With an 8-pin power connector, PRO B840M-B is ready for the challenge of heavy-loading tasks.
Chipset Heatsink
The chipset heatsink is designed to reduce dust and noise and capable of maintaining high efficiency of heat dissipation.
HIGH-BANDWIDTH AND LOW-LATENCY NETWORK
MSI’s premium network solution provides incredible data transfer speed for demanding users.
| Number of M.2 (M) slots | 2 |
|---|---|
| Number of SATA Express connectors | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
| Total number of SATA connectors | 4 |
| Supported storage drive interfaces | M.2, Micro SATA III |
| USB 2.0 connectors | 4 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| mSATA ports quantity | 0 |
| Number of SATA connectors | 0 |
| Number of SATA III connectors | 4 |
| Number of SATA II connectors | 0 |
| Number of chassis fan connectors | 5 |
| RGB LED pin header | Yes |
| Number of CPU fan connectors | 1 |
| Number of water pump connectors | 1 |
| Number of RGB LED pin headers | 3 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| Supported processor sockets | Socket AM5 |
| On-board graphics card | No |
| HDMI version | 2.1 |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio output channels | 7.1 channels |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 11 x64 |
| RAID levels | 0, 1, 10 |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket | Socket AM5 |
| Number of memory slots | 2 |
| Memory slots type | DIMM |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Supported memory clock speeds | 4800, 5600, 8000 MHz |
| Maximum internal memory | 128 GB |
| Supported memory clock speed (max) | 8000 MHz |
| ECC сompatibility | Non-ECC |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| 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 |
| USB 2.0 ports quantity | 2 |
| VGA (D-Sub) ports quantity | 0 |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| DVI-D ports quantity | 0 |
| Ethernet LAN | Yes |
| Wi-Fi | No |
| LAN controller | Realtek RTL8125D |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Audio chip | Realtek ALC897 |
| Product colour | Black |
| PCI Express x16 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 | 226 mm |
| Depth | 243.8 mm |
MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX
- Supports AMD RyzenTM 9000 / 8000 / 7000 Series Desktop Processors
- Supports DDR5 Memory, Dual Channel DDR5 8000+ MT/s (OC)
- Ultra Performance: Direct 7+2+1 Power System with P-PAK, 8-pin CPU power connector, Core Boost, Memory Boost, 6-layer PCB made by 2oz thickened copper
- EZ DIY: EZ M.2 Clip II and EZ PCIe Clip II
- Lightning Fast Game experience: PCIe 4.0 slot and Lightning Gen 4 x4 M.2
- 2.5G LAN: the remarkable solution for professional and multimedia use, delivering secure, stable, and high-speed networking and data transmission
- Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience
1000 in stock
Free shipping from $50
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