General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Weight
Unknown
Max Memory
128 GB
Memory Type
DDR5
Memory Slots
2
Colors
BLACK
GREY
Lighting
None
PCIe Slots
1 x PCIe 5.0 x16
1 x PCIe 4.0 x4
M.2 Slots
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
None
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
Unknown
CPU Optional Fan Headers
Unknown
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
ECC Support
Yes
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
1 x DisplayPort
1 x HDMI port
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
1 x PS/2 Keyboard/Mouse combo port
Display Outputs
Unknown
Product Information
Manufacturer
ASUS
Series
PRIME
Variant
B850M-K-CSM
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRIME B850M-K-CSM
BuildCores ID
uahyj98cy
Motherboard
ASUS PRIME B850M-K-CSM
SocketAM5
Form FactorMicro ATX
ChipsetAMD B850
Loading...
No retailers available yet
Price History
Loading price history...
* Amazon pricing is not included in price history graphs.
General Specifications
Socket
AM5
Form Factor
Micro ATX
Chipset
AMD B850
Weight
Unknown
Max Memory
128 GB
Memory Type
DDR5
Memory Slots
2
Colors
BLACK
GREY
Lighting
None
PCIe Slots
1 x PCIe 5.0 x16
1 x PCIe 4.0 x4
M.2 Slots
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
None
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
Unknown
CPU Optional Fan Headers
Unknown
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
ECC Support
Yes
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
1 x DisplayPort
1 x HDMI port
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
1 x PS/2 Keyboard/Mouse combo port
Display Outputs
Unknown
Product Information
Manufacturer
ASUS
Series
PRIME
Variant
B850M-K-CSM
Release Year
2025
Manufacturer Color
Black/Silver
UPC
None
EAN
None
Part Numbers
PRIME B850M-K-CSM
BuildCores ID
uahyj98cy