Learn more about ASUS PRIME B650M-A II-CSM

Model

Brand

ASUS

Model

PRIME B650M-A II-CSM

Part Number

90MB1EH0-M0AAYC

Supported CPU

CPU Socket Type

AM5

CPU Type

Supports AMD Ryzen 7000 Series Desktop Processors*

* Refer to www.asus.com for CPU support list.

Chipsets

Chipset

AMD B650

Memory

Number of Memory Slots

4x288pin (DDR5)

Memory Standard

DDR5 6400+(OC)/6200(OC)/6000(OC)/5800(OC)/5600(OC)/5400(OC)/5200/5000/4800 ECC and Non-ECC, Un-buffered Memory*

Maximum Memory Supported

128GB

Channel Supported

Dual Channel

ECC Supported

Yes

Buffer Supported

Un-buffered

Memory Feature

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.

Expansion Slots

PCI Express 4.0 x16

AMD Ryzen 7000 Series Desktop Processors*
1 x PCIe 4.0 x16 slot (supports x16 mode)

AMD B650 Chipset
2 x PCIe 4.0 x16 slots (support x1 mode)

Storage Devices

SATA 6Gb/s

4 x SATA 6Gb/s

M.2

AMD Ryzen 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)

AMD B650 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)

SATA RAID

AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10.

Onboard Audio

Audio Chipset

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 Japanese audio capacitors
– Dedicated audio PCB layers
* A chassis with an HD audio module in the front panel is required to support 7.1-channel audio output.

Audio Channels

7.1 Channels

Onboard LAN

Max LAN Speed

1 x Realtek 2.5Gb Ethernet

Rear Panel Ports

Back I/O Ports

2 x USB 3.2 Gen 2 ports (2 x Type-A)
2 x USB 3.2 Gen 1 ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x VGA port
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

Internal I/O Connectors

Onboard USB

1 x USB 3.2 Gen 1 connector (supports USB Type-C )
1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports

Other Connectors

Fan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
3 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

Miscellaneous
3 x Addressable Gen 2 headers
1 x Aura RGB header
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x S/PDIF Out header
1 x Speaker header
1 x SPI TPM header (14-1pin)
1 x 10-1 pin System Panel header

Physical Spec

Form Factor

Micro ATX

Dimensions (W x L)

9.6″ x 9.6″

Power Pin

1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector

Windows 11 Compatibility

Windows 11

Supported

Features

Features

ASUS 5X PROTECTION III
– DIGI+ VRM
– LANGuard
– Overvoltage Protection
– SafeSlot Core+
– Stainless-Steel Back I/O
ASUS Q-Design
– Q-DIMM
– Q-LED core
– Q-Slot
ASUS Thermal Solution
– VRM heatsink design
ASUS EZ DIY
– BIOS FlashBack™ button
– BIOS FlashBack™ LED
Aura Sync
– Aura RGB header
– Addressable Gen 2 headers