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Green micro-ATX board with silver VRM heatsinks, four DDR5 slots, two M.2 shields, 2.5Gb Ethernet and Wi-Fi 6 antennas

ASUS

ASUS Prime B650M-A AX AMD motherboard

SKU CH-TWET-QD30N

Micro-ATX board for AMD Ryzen 7000 CPUs with DDR5 memory, PCIe 5.0 M.2, Wi-Fi 6 and 2.5Gb Ethernet

  • CPU Socket TypeAM5
  • CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors* * Refer t
  • ChipsetAMD B650
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 5600(OC)/5400(OC)/5200/5000/4800 ECC and Non-ECC, Un-bu
  • Maximum Memory Supported128GB
  • Ready for Ryzen 7000 series processors with AM5 socket
  • DDR5 memory up to 5600 OC across four slots for 128 GB total
  • PCIe 5.0 M.2 slot enables ultrafast storage performance
  • 5 Gb Ethernet plus Wi-Fi 6 for high-speed wired and wireless networking
  • VRM and PCH heatsinks with hybrid fan headers deliver comprehensive cooling

AMD AM5 Socket Ready for Ryzen 7000

The ASUS Prime B650M-A AX motherboard uses the AMD AM5 socket to support AMD Ryzen 7000 Series desktop processors. It provides four DDR5 memory slots with a maximum capacity of 128GB in dual-channel mode. The board includes one PCIe 5.0 M.2 slot and one PCIe 4.0 M.2 slot for high-speed storage. Connectivity covers Wi-Fi 6, Realtek 2.5Gb Ethernet, USB 3.2 Gen 2 ports and a front USB 3.2 Gen 1 Type-C header.

Sustained Load Behaviour with VRM Heatsink

Comprehensive cooling uses a VRM heatsink and PCH heatsink together with hybrid fan headers controlled by Fan Xpert 2+. This arrangement keeps power delivery stable during extended workloads rather than only in short bursts. ASUS OptiMem II routing preserves signal integrity across the 288-pin DDR5 slots, helping memory run at 5600(OC), 5400(OC), 5200, 5000 or 4800 speeds under continuous demand. Realtek 7.1 audio with shielding maintains clean output during long sessions.

Practical Limits of PCIe 5.0 and Wi-Fi 6

The primary M.2 slot operates at PCIe 5.0 x4 from the CPU, while the second M.2 slot runs at PCIe 4.0 x4 from the chipset. Eight SATA 6Gb/s ports support RAID 0, 1 and 10 alongside PCIe RAID configurations. Wi-Fi 6 uses 2x2 802.11ax on 2.4GHz and 5GHz bands for wireless throughput within the standard's real-world envelope. Video outputs include HDMI and DisplayPort for processors with integrated graphics.

Highlights

  • Ready for Ryzen 7000 series processors with AM5 socket
  • DDR5 memory up to 5600 OC across four slots for 128 GB total
  • PCIe 5.0 M.2 slot enables ultrafast storage performance
  • 5 Gb Ethernet plus Wi-Fi 6 for high-speed wired and wireless networking
  • VRM and PCH heatsinks with hybrid fan headers deliver comprehensive cooling

Specifications

BrandASUS
SeriesPrime
ModelPRIME B650M-A AX
Part Number90MB1CE0-M0AAY0
CPU Socket TypeAM5
CPU TypeSupports AMD Ryzen 7000 Series Desktop Processors*
* Refer to www.asus.com for CPU support list.
ChipsetAMD B650
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 5600(OC)/5400(OC)/5200/5000/4800 ECC and Non-ECC, Un-buffered Memory*
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 refer to www.asus.com for memory support list.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
Maximum Memory Supported128GB
Channel SupportedDual Channel
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 4.0 x16AMD Ryzen 7000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x16 mode)
1 x PCIe 4.0 x16 slot (supports x1 mode)
AMD B650 Chipset
2 x PCIe 4.0 x16 slots (support x1 mode)
* Please check the PCIe bifurcation table on the ASUS support site
Serial ATA (SATA)8 x SATA 6Gb/s
M.2AMD 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)
** The SATA6G_E12/E34 ports cannot support RAID.
SATA RAIDAMD RAIDXpert2 Technology supports both PCIe RAID 0/1/10 and SATA RAID 0/1/10
Audio ChannelsRealtek 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.
Max LAN Speed1 x Realtek 2.5Gb Ethernet
Wireless LANWi-Fi 6
2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Supports 2.4/5GHz frequency band
BluetoothBluetooth v5.2
Back I/O Ports2 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 Wi-Fi Module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
1 x PS/2 Keyboard/Mouse combo port
Onboard USB1 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 ConnectorsFan 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
Storage related
2 x M.2 slots (Key M)
8 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
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11Supported
FeaturesASUS 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
Package ContentsCables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x Screw package for M.2 SSD
Documentation
1 x User guide

Questions about this item

Will my AMD Ryzen 7000 processor fit this motherboard?

Yes, the board uses the AM5 socket that is designed for AMD Ryzen 7000 series desktop processors.

What DDR5 memory speeds can I run with four modules installed?

The board supports DDR5 up to 5600(OC) and 5400(OC) with EXPO profiles, plus standard speeds of 5200, 5000 and 4800 across all four slots.

Can I add a PCIe 5.0 M.2 drive and still keep all eight SATA ports active?

The primary M.2 slot runs at PCIe 5.0 x4 from the CPU, while the chipset provides a second M.2 slot at PCIe 4.0 x4 and eight SATA 6Gb/s ports that remain available.

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