General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Weight
Unknown
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 4.0 x16
M.2 Slots
M 2280 PCIe 5.0 x4
M 2280 PCIe 4.0 x4
M 2242/2260/2280 PCIe 4.0 x4
SATA 6Gb/s
4
SATA 3Gb/s
0
U.2 Ports
0
Onboard Ethernet
Realtek 2.5 Gb/s
WiFi
Wifi 6E Bluetooth 5.3
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
1
ARGB 5V Headers
3
RGB 12V Headers
Unknown
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
No
Audio Chipset
Realtek
Audio Channels
7.1
Back Panel Ports
2 x USB 10Gbps ports
2 x USB 5Gbps ports
4 x USB 2.0 ports
2 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
Display Outputs
Unknown
Product Information
Manufacturer
ASUS
Series
PRIME
Variant
B850M-A-CSM
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRIME B850M-A-CSM
BuildCores ID
49dighfnm
Motherboard
ASUS PRIME B850M-A-CSM
SocketAM5
Form FactorMicro ATX
ChipsetAMD B850
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General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Weight
Unknown
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 4.0 x16
M.2 Slots
M 2280 PCIe 5.0 x4
M 2280 PCIe 4.0 x4
M 2242/2260/2280 PCIe 4.0 x4
SATA 6Gb/s
4
SATA 3Gb/s
0
U.2 Ports
0
Onboard Ethernet
Realtek 2.5 Gb/s
WiFi
Wifi 6E Bluetooth 5.3
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
1
ARGB 5V Headers
3
RGB 12V Headers
Unknown
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
No
Audio Chipset
Realtek
Audio Channels
7.1
Back Panel Ports
2 x USB 10Gbps ports
2 x USB 5Gbps ports
4 x USB 2.0 ports
2 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
Display Outputs
Unknown
Product Information
Manufacturer
ASUS
Series
PRIME
Variant
B850M-A-CSM
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRIME B850M-A-CSM
BuildCores ID
49dighfnm