General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Max Memory
256 GB
Memory Type
DDR5
Memory Slots
4
Colors
BLACK
GREY
Lighting
None
PCIe Slots
1 x PCIe 5.0 x16
1 x PCIe 3.0 x1
M.2 Slots
M 2260/2280 PCIe 5.0 x4
M 2260/2280 PCIe 4.0 x2
SATA 6Gb/s
4
SATA 3Gb/s
0
U.2 Ports
0
Onboard Ethernet
Realtek 8126VB 5 Gb/s
WiFi
Wi-Fi 7 Bluetooth 5.4
USB 2.0
2
USB 3.2 Gen 1
1
USB 3.2 Gen 2
1
USB 3.2 Gen 2x2
0
USB 4.0
0
USB 4 80Gbps
Unknown
CPU Fan Headers
1
Case Fan Headers
3
Pump Headers
1
CPU Optional Fan Headers
Unknown
ARGB 5V Headers
3
RGB 12V Headers
1
Power Button Header
Yes
Reset Button Header
Yes
Power LED Header
Yes
HDD LED Header
Yes
Temperature Sensor Headers
Unknown
Thunderbolt Headers
Unknown
COM Port Headers
1
Main Power
24-pin
CPU Power
8-pin
4-pin
ECC Support
No
RAID Support
Yes
Back-Connect Connectors
No
BIOS Flashback
Yes
Clear CMOS Button
Yes
Audio Chipset
Realtek ALC897
Audio Channels
7.1
Back Panel Ports
1x Flash BIOS Button
1x Clear CMOS Button
1x DisplayPort
1x HDMI™ port
3x USB 10Gbps Type A ports
2x USB 10Gbps Type-C ports
3x USB 5Gbps Type A ports
1x 5G LAN (RJ45) port
3x audio jacks
Product Information
Manufacturer
MSI
Series
PRO
Variant
B850M-A
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRO B850M-A
BuildCores ID
08x09w1vy
Motherboard
MSI B850 PRO B850M-A AM5 DDR5 Micro ATX
SocketAM5
Form FactorMicro ATX
ChipsetAMD B850
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General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Max Memory
256 GB
Memory Type
DDR5
Memory Slots
4
Colors
BLACK
GREY
Lighting
None
PCIe Slots
1 x PCIe 5.0 x16
1 x PCIe 3.0 x1
M.2 Slots
M 2260/2280 PCIe 5.0 x4
M 2260/2280 PCIe 4.0 x2
SATA 6Gb/s
4
SATA 3Gb/s
0
U.2 Ports
0
Onboard Ethernet
Realtek 8126VB 5 Gb/s
WiFi
Wi-Fi 7 Bluetooth 5.4
USB 2.0
2
USB 3.2 Gen 1
1
USB 3.2 Gen 2
1
USB 3.2 Gen 2x2
0
USB 4.0
0
USB 4 80Gbps
Unknown
CPU Fan Headers
1
Case Fan Headers
3
Pump Headers
1
CPU Optional Fan Headers
Unknown
ARGB 5V Headers
3
RGB 12V Headers
1
Power Button Header
Yes
Reset Button Header
Yes
Power LED Header
Yes
HDD LED Header
Yes
Temperature Sensor Headers
Unknown
Thunderbolt Headers
Unknown
COM Port Headers
1
Main Power
24-pin
CPU Power
8-pin
4-pin
ECC Support
No
RAID Support
Yes
Back-Connect Connectors
No
BIOS Flashback
Yes
Clear CMOS Button
Yes
Audio Chipset
Realtek ALC897
Audio Channels
7.1
Back Panel Ports
1x Flash BIOS Button
1x Clear CMOS Button
1x DisplayPort
1x HDMI™ port
3x USB 10Gbps Type A ports
2x USB 10Gbps Type-C ports
3x USB 5Gbps Type A ports
1x 5G LAN (RJ45) port
3x audio jacks
Product Information
Manufacturer
MSI
Series
PRO
Variant
B850M-A
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRO B850M-A
BuildCores ID
08x09w1vy
