ASUS PRIME B650M-A II-CSM

ASUS PRIME B650M-A II-CSM AM5 DDR5 6400+ PCIe 5.0 M.2 Realtek 2.5Gb LAN DisplayPort VGA HDMI USB 3.2 Gen 2 ports front USB 3.2 Gen 1 Type-C Micro-ATX

ASUS PRIME B650M-A II-CSM AM5 DDR5 6400+ PCIe 5.0 M.2 Realtek 2.5Gb LAN DisplayPort VGA HDMI USB 3.2 Gen 2 ports front USB 3.2 Gen 1 Type-C Micro-ATX

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  • AMD AM5 Socket: Ready for AMD Ryzen 7000 Series Desktop Processors
  • Ultrafast Connectivity: DDR5 6400+(OC) 600M.2 PCIe 5.0, Realtek 2.5Gb Ethernet, USB 3.2 Gen 2 ports, front USB 3.2 Gen 1 Type-C
  • ASUS OptiMem II: Careful routing of traces and vias, plus ground layer optimizations to preserve signal integrity for improved memory overclocking
  • Comprehensive Cooling: 6-layer 2Oz PCB design, VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+
  • Aura Sync RGB Lighting: Onboard Addressable Gen 2 headers and Aura RGB header for RGB LED strips, easily synced with Aura Sync-capable hardware

Specifications Overview

Model
  • PRIME B650M-A II-CSM
  • 90MB1EH0-M0AAYC
Release Date January 2023

* First availability for purchase, it may not correspond to the actual market launch date.

Socket AM5
Form factor Micro ATX
Chipset AMD B650
Supported Memory DDR5
4800Mhz 5000Mhz 5200Mhz 5400Mhz 5600Mhz 5800Mhz 6000Mhz 6200Mhz 6400Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support
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
Max LAN Speed 1 x Realtek 2.5Gb Ethernet
SLI Support
CrossFire Support
RAID Support
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
Wireless LAN
PCI-Express x16 Slots 3
PCI-Express x4 Slots 0
PCI-Express x1 Slots 0
SATA 6 Gbps Ports 4
SATA Express Ports 0
M.2 Ports 2
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
  • 2242 / 2260 / 2280 - M Key
RAM Slots 4
Maximum Supported RAM 192 GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 1
Onboard USB 3.2 Gen 2x2 0


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