MSI Socket AM5, AMD B840 Chipset, 2 x DDR5-SDRAM up to 128GB, LAN, 1 x RJ-45, 4 x SATA III, 2 x M.2(M), UEFI AMI, Micro ATX
BUSINESS ELEGANCE 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
Availability: In stock
BUSINESS ELEGANCE DIRECT 7+2+1 POWER DESIGN Chipset Heatsink HIGH-BANDWIDTH AND LOW-LATENCY NETWORK BUSINESS ELEGANCE 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.
Specifications
| ACPI version | 6.5 |
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| System Management BIOS (SMBIOS) version | 3.7 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 1st M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 largest key size | 2280 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 slots | 2 |
| Audio chip | Realtek ALC897 |
| Audio output channels | 7.1 channels |
| Component for | PC |
| Motherboard chipset | AMD B840 |
| Motherboard chipset family | AMD |
| Motherboard form factor | micro ATX |
| Product colour | Black |
| Windows operating systems supported | Windows 11 x64 |
| On-board graphics card | No |
| Number of chassis fan connectors | 5 |
| Number of CPU fan connectors | 1 |
| Number of RGB LED pin headers | 3 |
| Number of SATA connectors | 0 |
| Number of SATA Express connectors | 0 |
| Number of SATA II connectors | 0 |
| Number of SATA III connectors | 4 |
| Number of water pump connectors | 1 |
| RGB LED pin header | Yes |
| Total number of SATA connectors | 4 |
| 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 |
| ECC сompatibility | Non-ECC |
| Maximum internal memory | 128 GB |
| Memory channels | Dual-channel |
| Memory slots type | DIMM |
| Number of memory slots | 2 |
| Supported memory clock speed (max) | 8000 MHz |
| Supported memory clock speeds | 4800, 5600, 8000 |
| Supported memory types | DDR5-SDRAM |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Ethernet LAN | Yes |
| LAN controller | Realtek RTL8125D |
| Wi-Fi | No |
| mSATA ports quantity | 0 |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor manufacturer | AMD |
| Processor socket | Socket AM5 |
| Supported processor sockets | Socket AM5 |
| DVI-D ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| 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 |
| VGA (D-Sub) ports quantity | 0 |
| Number of HDDs supported | 4 |
| Number of storage drives supported | 6 |
| RAID levels | 0, 1, 10 |
| RAID support | Yes |
| Supported storage drive interfaces | M.2, Micro SATA III |
| Supported storage drive types | HDD & SSD |
| Brand Name | MSI |
| Warranty | 1 year |
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