Processor | |
Processor manufacturer | AMD |
Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
Processor socket | AM5 |
Supported processor sockets | Socket AM5 |
Memory | |
Maximum internal memory | 128 GB |
Supported memory clock speeds | 4800,5600,8000 MHz |
Supported memory types | DDR5 |
Memory channels | Dual-channel |
Memory slots type | DIMM |
Number of memory slots | 2 |
Supported memory clock speed (max) | 8000 MHz |
ECC сompatibility | Non-ECC |
Weight & dimensions | |
Width | 226 mm |
Depth | 243.8 mm |
Networking | |
Ethernet LAN | ![]() |
LAN controller | Realtek RTL8125D |
Wi-Fi | ![]() |
Ethernet interface type | 2.5 Gigabit Ethernet |
Internal I/O | |
Number of SATA connectors | 0 |
USB 2.0 connectors | 4 |
Number of chassis fan connectors | 5 |
USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
Number of SATA III connectors | 4 |
Number of SATA Express connectors | 0 |
USB 3.2 Gen 2 (3.1 Gen 2) connectors | 1 |
Total number of SATA connectors | 4 |
RGB LED pin header | ![]() |
Number of RGB LED pin headers | 3 |
Number of CPU fan connectors | 1 |
Number of water pump connectors | 1 |
Back panel I/O ports | |
USB 2.0 ports quantity | 2 |
Ethernet LAN (RJ-45) ports | 1 |
VGA (D-Sub) ports quantity | 0 |
DVI-D ports quantity | 0 |
HDMI ports quantity | 1 |
HDMI version | 2.1 |
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 |
Storage controllers | |
RAID levels | 0, 1, 10 |
Number of HDDs supported | 4 |
RAID support | ![]() |
Number of storage drives supported | 6 |
Supported storage drive types | HDD & SSD |
Supported storage drive interfaces | M.2, Micro SATA III |
Expansion slots | |
PCI Express x16 slots | 2 |
Number of M.2 (M) slots | 2 |
1st M.2 largest key size | 2280 |
2nd M.2 largest key size | 2280 |
1st M.2 highest PCI Express generation | 4.0 |
2nd M.2 highest PCI Express generation | 4.0 |
BIOS | |
BIOS memory size | 256 Mbit |
BIOS type | UEFI AMI |
ACPI version | 6.5 |
System Management BIOS (SMBIOS) version | 3.7 |
Other features | |
mSATA ports quantity | 0 |
Graphics | |
On-board graphics card | ![]() |
Features | |
Motherboard chipset | AMD B840 |
Motherboard form factor | Micro ATX |
Product colour | Black |
Audio output channels | 7.1 channels |
Windows operating systems supported | Windows 11 x64 |
Motherboard chipset family | AMD |
Component for | PC |
Audio chip | Realtek ALC897 |
EAN | 4711377360166 |
Source: Icecat.biz |
The MSI PRO B840M-B is a reliable and efficient mATX motherboard designed for everyday computing and home office use. Supporting the latest AMD Ryzen™ 9000 series processors on the AM5 socket, this motherboard offers a stable platform for a variety of tasks. Its compact form factor makes it an excellent choice for space-saving builds without compromising essential features.
Engineered with MSI's exclusive features, the PRO B840M-B includes PCIe 4.0 M.2 slots for high-speed storage, EZ PCIe Clip II for easy graphics card installation, and a 2.5G LAN for fast network connectivity. The Direct 7+2+1 power design ensures efficient power delivery, while Frozr AI Cooling automatically adjusts fan speeds to maintain optimal system temperatures. Ideal for users seeking a balance of performance and reliability in a compact design.
Key Features- Supports AMD Ryzen™ 9000 series processors
- AMD AM5 Socket
- DDR5 Memory Support
- PCIe 4.0 M.2 slots
- 2.5G LAN
- EZ PCIe Clip II for easy GPU installation
- Direct 7+2+1 Power Design
- Frozr AI Cooling
- mATX Form Factor
- Flash BIOS Button
- Clear CMOS Button
- MSI PRO B840M-B Motherboard
- I/O Shield
- SATA Cables
- User Manual
- Driver CD/USB
- M.2 Screws/Standoffs
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