ASUS PRIME B850M-A-CSMUK manufacturer specification · PRIME B850M-A-CSM- Chipset
- AMD B850 ChipsetThis one: AMD B650 Chipset
MOTHERBOARDS
ASUS Pro B650M-CT-CSM
UK manufacturer specification
- CPU socket
- AM5
- Chipset
- AMD B650 Chipset
- Form factor and dimensions
- mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
Pro B650M-CT-CSM motherboard, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.
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THE ACTUAL PRODUCT
Compare with ASUS PRIME B850M-A-CSM
Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
The nearest checked motherboards by key specifications, with what differs from the ASUS Pro B650M-CT-CSM. The first matches the Compare button above.
ASUS PRIME B850M-A-CSMUK manufacturer specification · PRIME B850M-A-CSM
ASUS PRIME B850M-A WIFI-CSMUK manufacturer specification · PRIME B850M-A WIFI-CSM- Chipset
- AMD B850 ChipsetThis one: AMD B650 Chipset
ASUS PRIME B850M-A WIFIUK manufacturer specification · PRIME B850M-A WIFI- Chipset
- AMD B850 ChipsetThis one: AMD B650 Chipset
Key strengths
Published motherboard interfaces and configuration are available from the exact-model ASUS specification source.
Before you buy
Compatibility and maximum operating modes depend on the source’s stated hardware, firmware and connection requirements; manufacturer figures are not independent measurements.
Works with
Products in this catalogue that list the same socket or memory type as the ASUS Pro B650M-CT-CSM. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.
- 19 AM5 processorsSocket AM5 on both, from cited specifications
- 50 DDR5 memory kitsMemory type DDR5 on both, from cited specifications
Every specification. With its source.
Full specifications
Exact configuration: UK manufacturer specification · Pro B650M-CT-CSM
13 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Platform & board
3 items
Memory
1 item
- Memory type, slots and limit
- 4 x DIMM slots, Max. 192GB, DDR5 7600+(OC)/7200(OC)/7000(OC)/6800(OC)/6600(OC)/6400(OC)/6200(OC)/6000(OC)/5800(OC)/5600(OC)/5400(OC)/5200/5000/4800 ECC and Non-ECC, Un-buffered Memory* Dual Channel Memory Architecture Supports AMD Extended Profiles for Overclocking (EXPO™) OptiMem II * Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support under the Support tab or visit https://www.asus.com/support/. * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.Source
Expansion slots
1 item
- Expansion slots and restrictions
- AMD Ryzen™ 9000 & 7000 Series Desktop Processors* 1 x PCIe 4.0 x16 slot (supports x16 mode) 1 x PCIe 4.0 x16 slot (supports x4 mode) AMD Ryzen™ 8000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)** 1 x PCIe 4.0 x16 slot (supports x4/x2 mode)** AMD B650 Chipset 1 x PCIe 4.0 x1 slot * Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/). ** Specifications vary by CPU types. - To ensure compatibility of the device installed, please refer to https://www.asus.com/support/ for the list of supported peripherals.Source
Storage
1 item
- Storage interfaces and restrictions
- Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports* AMD Ryzen™ 9000 & 7000 Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode) AMD Ryzen™ 8000 Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) AMD B650 Chipset M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) 4 x SATA 6Gb/s ports * AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10.Source
USB & rear connections
2 items
- USB ports and headers
- Rear USB (Total 8 ports) 2 x USB 3.2 Gen 2 (10G) ports (1 x Type-A + 1 x USB Type-C®) 2 x USB 3.2 Gen 1 (5G) ports (2 x Type-A) 4 x USB 2.0 ports (4 x Type-A) Front USB (Total 7 ports) 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C®) 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports 2 x USB 2.0 headers support 4 additional USB 2.0 portsSource
- Rear-panel ports
- 2 x USB 3.2 Gen 2 (10G) ports (1 x Type-A + 1 x USB Type-C®) 2 x USB 3.2 Gen 1 (5G) ports (2 x Type-A) 4 x USB 2.0 ports (4 x Type-A) 2 x DisplayPort 1 x HDMI™ port 1 x Realtek 1Gb Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo portSource
Networking
1 item
- Network interfaces and requirements
- 1 x Realtek 1Gb Ethernet ASUS LANGuard; M.2 slot only (Key E, PCIe)* * Wi-Fi module is sold separately.Source
Audio
1 item
- Audio interfaces
- Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.Source
Power, cooling & lighting
1 item
- Internal headers and connectors
- Fan and Cooling related 1 x 4-pin CPU Fan header 2 x 4-pin Chassis Fan headers Power related 1 x 24-pin Main Power connector 1 x 8-pin +12V Power connector Storage related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 3.2 Gen 1 (5G) connector (supports USB Type-C® ) 1 x USB 3.2 Gen 1 (5G) header supports 2 additional USB 3.2 Gen 1 ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports Miscellaneous 1 x Clear CMOS header 1 x Chassis Intrude header 1 x COM Port header 1 x Front Panel Audio header (AAFP) 1 x COM debug header 1 x LPT header 1 x Mono-out header (with Amp IC) 1 x M.2 slot (Key E) 1 x SMBUS header 1 x Speaker header 1 x 10-1 pin System Panel headerSource
BIOS, software & diagnostics
2 items
- CPU support and BIOS requirements
- AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors* Supports up to AMD 170W CPU * Refer to www.asus.com for CPU support list. BIOS: 256 Mb Flash ROM, UEFI AMI BIOS
Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.
Source - Listed operating systems
- Windows® 11, Windows® 10 64-bitSource
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