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MSI
MSI PRO B840M-B motherboard AMD B840 Socket AM5 micro ATX
SKU
PRO B840M-B
In Stock
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
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- 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
| Internal I/O | |
|---|---|
| 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 |
| Technical details | |
| 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 |
| Total number of SATA connectors | 4 |
| Audio | |
| Audio output channels | 7.1 channels |
| Performance | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 11 x64 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| RAID levels | 0, 1, 10 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Supported processor sockets | Socket AM5 |
| Processor socket | Socket AM5 |
| Memory | |
| 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 |
| Storage controllers | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, Micro SATA III |
| RAID levels | 0, 1, 10 |
| Number of storage drives supported | 6 |
| RAID support | Yes |
| Graphics | |
| On-board graphics card | No |
| Rear panel I/O ports | |
|---|---|
| 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 version | 2.1 |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| DVI-D ports quantity | 0 |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | No |
| LAN controller | Realtek RTL8125D |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Features | |
| Windows operating systems supported | Windows 11 x64 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | micro ATX |
| Component for | PC |
| Audio chip | Realtek ALC897 |
| Product colour | Black |
| Expansion slots | |
| Number of M.2 (M) slots | 2 |
| 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 | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| ACPI version | 6.5 |
| System Management BIOS (SMBIOS) version | 3.7 |
| Software | |
| Windows operating systems supported | Windows 11 x64 |
| Weight & dimensions | |
| Width | 226 mm |
| Depth | 243.8 mm |
| Other features | |
| mSATA ports quantity | 0 |
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|---|---|---|---|---|---|---|
| SKU |
PRO B840M-B
|
90MB14I0-M0EAY0
|
B550 AORUS ELITE V2
|
90MB17C0-M0EAY0
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90MB17F0-M0EAY0
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90MB1700-M0EAYC
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| Manufacturer |
MSI
|
ASUS
|
Gigabyte
|
ASUS
|
ASUS
|
ASUS
|
| Processor manufacturer |
AMD
|
AMD
|
AMD
|
Intel
|
AMD
|
Intel
|
| Motherboard form factor |
micro ATX
|
micro ATX
|
ATX
|
micro ATX
|
micro ATX
|
micro ATX
|
| Processor socket |
Socket AM5
|
Socket AM4
|
Socket AM4
|
LGA 1200 (Socket H5)
|
Socket AM4
|
LGA 1200 (Socket H5)
|
| Supported memory types |
DDR5-SDRAM
|
DDR4-SDRAM
|
DDR4-SDRAM
|
DDR4-SDRAM
|
DDR4-SDRAM
|
DDR4-SDRAM
|
| Component for |
PC
|
N/A
|
PC
|
PC
|
PC
|
PC
|
| Number of memory slots |
2 to 3
|
4 to 6
|
4 to 6
|
2 to 3
|
4 to 6
|
4 to 6
|