B650M-K
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 7000-series processors. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, PRIME B650M-K provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features.

FLEXIBILITY
Comprehensive controls form the foundation of the ASUS PRIME series. The PRIME B650 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity.

CPU Performance Boost
AMD Precision Boost Overdrive(PBO) pushes the CPU current and voltage budget to opportunistically increase performance. By aggressively tuning the PBO parameters, AMD‘s algorithm can leverage the motherboard’s robust power solution to ramp up performance even higher.

COOLING
PRIME B650 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.

VRM Heatsink and Thermal Pad
VRM heatsink and thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

Cooler by Design
Prime B650 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.

Multiple Temperature Sources
Each header can dynamically reference four thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

PERFORMANCE
The PRIME B650 series is built to handle the high core counts and bandwidth demands of AMD processors. ASUS B650 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible data transfer options.

DDR5 Performance Enhancement
Comprehensive memory tuning options are the cornerstone of PRIME motherboards. With the PRIME B650M-A AX, you can extract all of the potential out of your DDR5 modules, whether they're from an extreme-speed kit or an entry-level set that would otherwise be locked.

For entry-level modules without EXPO™ memory support, we’ve got you covered. Click here to learn more about AEMP. arrow.
For those who want to fly past stock DDR5 speeds, the PRIME B650M-A AX is primed and ready for enthusiast-grade kits courtesy of vast AMD Extended Profiles for Overclocking (EXPOâ„¢) support. Seasoned veterans can further tweak performance via the extensive array of settings in the UEFI.

Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.

THIS CHANGES EVERYTHING.
FROM THIS NEW PLATFORM, YOU CAN SEE THE FUTURE
Build your next rig with an AMD Ryzen™ 7000 Series processor and PRIME B650M-A AX to experience advanced performance. With up to 16 “Zen 4” cores and 32 threads, boost clocks of up to 5.7GHz, and 80MB cache, the AMD Ryzen™ 7000 Series keeps you ahead of the game.1

You’ll also gain access to new features for gamers with AMD Socket AM5, from the speed of DDR5 memory to the increased bandwidth of PCIe® 5.0. AMD Ryzen™ 7000 Series processors and AMD socket AM5 motherboards are unlocked for overclocking to personalize your experience. Gain even more performance when you overclock your DDR5 memory with AMD EXPO™ technology.2
Internal I/O
Number of M.2 (M) slots
2
Audio connector
Yes
12V power connector
Yes
Supported storage drive interfaces
M.2, SATA III
USB 2.0 connectors
2
USB 3.2 Gen 1 (3.1 Gen 1) connectors
2
TPM connector
Yes
S/PDIF out connector
Yes
Number of SATA III connectors
4
Number of COM connectors
1
Number of chassis fan connectors
2
Front panel audio connector
Yes
EPS power connector (8-pin)
Yes
CPU fan connector
Yes
ATX Power connector (24-pin)
Yes
RGB LED pin header
Yes
Technical details
Motherboard chipset family
AMD
Motherboard chipset
AMD B650
Supported processor sockets
Socket AM5
Parallel processing technology support
Not supported
Motherboard form factor
micro ATX
Component for
PC
Audio
Audio output channels
7.1 channels
Performance
Number of HDDs supported
4
Supported storage drive types
HDD & SSD
Windows operating systems supported
Windows 10 x64, Windows 11
Motherboard chipset family
AMD
Motherboard chipset
AMD B650
RAID levels
0, 1, 10
Supported processor sockets
Socket AM5
Audio output channels
7.1 channels
Motherboard form factor
micro ATX
Component for
PC
Expansion card interfaces
Audio connector
Yes
Processor
Processor manufacturer
AMD
Compatible processor series
AMD Ryzenâ„¢ 5, AMD Ryzenâ„¢ 7, AMD Ryzen 9 7th Gen
Supported processor sockets
Socket AM5
Processor socket
Socket AM5
Memory
Number of memory slots
2
Memory slots type
DIMM
Supported memory types
DDR5-SDRAM
Memory channels
Dual-channel
ECC
Yes
Non-ECC
Yes
Supported memory clock speeds
4800,5000,5200,5400,5600,5800,6000,6200,6400 MHz
Maximum internal memory
96 GB
Unbuffered memory
Yes
Supported memory clock speed (max)
6400 MHz
Storage controllers
Number of HDDs supported
4
Supported storage drive types
HDD & SSD
Supported storage drive interfaces
M.2, SATA III
RAID levels
0, 1, 10
Number of storage drives supported
6
RAID support
Yes
Graphics
Parallel processing technology support
Not supported
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
2
USB 2.0 ports quantity
4
VGA (D-Sub) ports quantity
1
PS/2 ports quantity
1
Microphone in
Yes
Headphone outputs
1
HDMI ports quantity
1
Ethernet LAN (RJ-45) ports
1