ASUS PRIME A620AM-A-CSMUK manufacturer specification · PRIME A620AM-A-CSM- Chipset
- AMD A620A ChipsetThis one: AMD B850 Chipset
MOTHERBOARDS
ASUS B850M AYW GAMING OC WIFI7 W
UK manufacturer specification
- CPU socket
- AM5
- Chipset
- AMD B850 Chipset
- Form factor and dimensions
- micro-ATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
B850M AYW GAMING OC WIFI7 W 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 A620AM-A-CSM
Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
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- AMD A620A ChipsetThis one: AMD B850 Chipset
ASUS PRIME A620M-A-CSMUK manufacturer specification · PRIME A620M-A-CSM- Chipset
- AMD A620 ChipsetThis one: AMD B850 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 B850M AYW GAMING OC WIFI7 W. 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 · B850M AYW GAMING OC WIFI7 W
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
- 2 x DIMM slots, max. 128GB, DDR5 Supports up to 8400+MT/s(OC) with Ryzen™ 9000 Series Processors, 9600+MT/s(OC) with Ryzen™ 8000 Series Processors, 8000+MT/s(OC) with Ryzen™ 7000 Series Processors, ECC and Non-ECC Un-buffered DIMM Dual channel memory architecture Supports AMD Extended Profiles for Overclocking (EXPO™) ASUS Enhanced Memory Profile (AEMP) * 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 list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market. * 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 5.0 x16 slot (supports x16 mode) AMD Ryzen™ 8000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)** AMD B850 Chipset 1 x PCIe 4.0 x4 slot (supports x4 mode) * 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/download-center/ for the list of supported peripherals.Source
Storage
1 item
- Storage interfaces and restrictions
- Total supports 3 x M.2 slots and 2 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) M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode) AMD Ryzen™ 8000 Series Desktop Processors M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4/x2 mode)* AMD B850 Chipset M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode) 2 x SATA 6Gb/s ports * Specifications vary by CPU types.Source
USB & rear connections
2 items
- USB ports and headers
- Rear USB (Total 10 ports) 1 x USB 20Gbps port (1 x USB Type-C®) 3 x USB 10Gbps ports (3 x Type-A) 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) Front USB (Total 7 ports) 1 x USB 10Gbps connector (supports USB Type-C®) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports * USB Type-C® power delivery output: max. 5V/3A.Source
- Rear-panel ports
- 1 x USB 20Gbps port (1 x USB Type-C®) 3 x USB 10Gbps ports (3 x Type-A) 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 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 1 x Clear CMOS buttonSource
Networking
1 item
- Network interfaces and requirements
- 1 x Realtek 2.5Gb Ethernet ASUS LANGuard; Wi-Fi 7 2x2 Wi-Fi 7* (802.11be) Supports 2.4/5/6GHz frequency band** Supports Wi-Fi 7 160MHz bandwidth Bluetooth® v5.4*** * Wi-Fi features may vary depending on the operating system For Windows 11, Wi-Fi 7 will require 24H2 or later version for full functions, Windows 11 21H2/22H2/23H2 only support Wi-Fi 6E. For Windows 10, please note that no driver is available, please refer to the Wi-Fi chipset vendor's website for details. ** Wi-Fi 6GHz frequency band and bandwidth regulatory may vary between countries. *** The Bluetooth® version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications.Source
Audio
1 item
- Audio interfaces
- Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * 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 1 x 4-pin CPU OPT Fan header 1 x 4-pin AIO Pump header 3 x 4-pin Chassis Fan headers Power Related 1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connectors Storage Related 3 x M.2 slots (Key M) 2 x SATA 6Gb/s ports USB 1 x USB 10Gbps connector (supports USB Type-C®) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports Miscellaneous 3 x Addressable RGB Gen 2 headers 1 x Chassis Intrusion header 1 x COM Port header 1 x Front Panel Audio header (F_AUDIO) 1 x SPI TPM header (14-1 pin) 1 x Start button 1 x Reset button 1 x 10-1 pin Front Panel System headerSource
BIOS, software & diagnostics
2 items
- CPU support and BIOS requirements
- AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors* * Refer to https://www.asus.com/support/download-center/ for CPU support list. BIOS: 512 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 11Source
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