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AMD B650 Micro-ATX motherboard, DDR5, PCIe 5.0 M.2 support, Realtek 2.5Gb Ethernet, Wi-Fi 6, DisplayPort, VGA, HDMI®, SATA 6 Gbps, USB 3.2 Gen 2 ports, front USB 3.2 Gen 1 Type-C®, BIOS FlashBack™, Arua Sync
- AMD AM5 Socket: Ready for AMD Ryzen™ 7000 Series Desktop Processors
- Ultrafast Connectivity: Wi-Fi 6, M.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: 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
- CEC Tier II ready
B650M-A AX
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-A AX provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features.Specification
- HDMI®
- VGA
- DisplayPort
- BIOS FlashBack™ button
- 1 x PS/2
- 2 x USB 3.2 Gen 1 (Type-A)
- 4 x USB 2.0 (Type-A)
- Realtek 2.5 Gb Ethernet
- 2 x USB 3.2 Gen 2 (Type-A)
- Wi-Fi 6
- 3 x Audio Jacks
- Expansion Slots
- 1 x PCIe 4.0 x16 (supports x16 mode)
SafeSlot Core+ - 3 x PCIe 4.0 x16 (support x1 mode)
- 1 x PCIe 4.0 x16 (supports x16 mode)
- 1 x Aura RGB Header
- 3 x Addressable Gen 2 Headers
- DDR5 support
- DDR5 6400+(OC)
- OptiMem II
- AM5 Socket for AMD Ryzen™ 7000 Series Desktop Processors
- 1 x Front USB 3.2 Gen 1 Header
- 1 x Front USB 3.2 Gen 1 Type-C®
- 2 x M.2 slots
- 1 x M.2 2280 (PCIe 5.0 x4 mode)
- 1 x M.2 2280 (PCIe 4.0 x4 mode)
- AMD B650 Chipset
- 8 x SATA 6 Gb/s
- 2 x Front USB 2.0 Headers
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.Intelligent Control
PBO Enhancement
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.Power Saving
All-Around Energy Efficiency
The Power Saving function contains several settings can easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting, and set the fan profile to a power saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.Fan Xpert 2+
Flexible Air- and Liquid-Cooling Controls
ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.UEFI BIOS
The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.Advanced Mode
Advanced Tuning for Serious Tweakers
An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make nuanced adjustments, so you can dial in performance just the way you want.Search Function
Quickly and easily find the option or setting you need.
ASUS User Profile
Port configuration settings between different BIOS versions, or share them with friends.EZ Mode
Quick and Simple Setup
EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.Intuitive Graphical Fan Control
Fine-tune individual fan settings simply by dragging a curve with the mouse.Aura On/Off Mode (Stealth)
Easily enable or disable Aura RGB lighting or every onboard LED, for a subdued aesthetic touch.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.Heatsink & PCB Design
Cooler by Design
Prime B650 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.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.Memory
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, ASUS has got you covered.
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 (EXPO™) support. Seasoned veterans can further tweak performance via the extensive array of settings in the UEFI.
ASUS OptiMem II
Revisions to the motherboard’s trace routing provide the latest processors with unrestricted access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce vias and adds shielding zones that significantly reduce crosstalk.Benefits of ASUS OptiMem II:
- Improved memory stability and compatibility
- Allows lower memory latencies at equivalent voltages
- Improved memory frequency margin
Storage
PCIe 5.0 M.2 Support
PRIME B650M-A AX offers a total of two M.2 slots, the first one supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, enabling quicker boot-up and app load times with OS or application drives.*Actual transmission speeds will be lower than the theoretical maximum speed.
Connectivity
Wi-Fi 6
The Wi-Fi 6 module is compatible with the 802.11ax standard and pushes theoretical peak bandwidth up to an incredible 1.2 Gbps. Perhaps more importantly for power users, it's optimized for more efficient operation on crowded networks with a lot of competing traffic. Pair your motherboard with ASUS Wi-Fi 6 routers to fully experience the networking potential of Wi-Fi 6.*ASUS add-on card is sold separately.
Realtek 2.5 Gb Ethernet
Realtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
Lower CPU workload
High TCP and UDP throughput
CUSTOMIZATION
The PRIME B650 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.Audio
Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.Audio Shielding
Audio shielding ensures precision analog/digital separation and greatly reduced multi-lateral interference.Dedicated Audio PCB Layers
Separate layers for left and right tracks ensures both channels deliver consistent, equal quality.Premium Audio Capacitors
Provides warm, natural, and immersive sound with exceptional clarity and fidelity.Personalization
Aura Sync
Outshine the Competition
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips and devices connected to the onboard RGB headers — and it can all be synced with an ever-growing portfolio of Aura-capable hardware.Addressable Gen 2 Headers
Three addressable Gen 2 headers are capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new headers also offer backward-compatibility with existing Aura RGB gear.Armoury Crate
Within a single intuitive interface, Armoury Crate offers easily customized Aura Sync RGB settings for every compatible device in your arsenal, plus controls for an ever-growing family of ASUS products, including keyboard and mouse preferences. Armoury Crate also integrates product registration and a news feed so that you never miss updates of interest to the ASUS community.
DIY Friendly
Q-LED Core
The Q-LED Core display produces light patterns by power LED during the Power-On Self-Test (POST) that can help users troubleshoot potential issues.
SafeSlot Core+
SafeSlot Core+ is the ASUS-exclusive PCIe slot fortified with a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.Overvoltage Protection
World-class circuit-protecting power designAn exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
Stainless-Steel Back I/O
3X corrosion-resistance for greater durabilityCorrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.
1000+
Compatible devices and components
The Prime B650 series provides superior compatibility with thousands of components and the memory support list identifies memory compatibility, giving you more choices for worry-free PC-building experiences.8000+
Validation hours
Every ASUS motherboard is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software, and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.Temperature and humidity tests
Ensures components withstand extreme conditions.Thermal measurement tests
Ensures that the system remains cool and stable under the heaviest loads.Insertion tests
Every port and connector is put through repeated installation cycles.Aging tests
Up to 48-hour aging test ensures reliability.Power-consumption tests
Checked for world-class energy efficiency.Temperature and DC margin tests
Ensures that the motherboard is capable of coping with voltages fluctuations caused by varying temperatures.Thermal-shock tests
Ensures ability to survive temperature changes during transportation.Non-operation shock tests
Built to withstand jolts that may occur during shipping.Burn-in tests
Every component is checked to ensure flawless operation.Installation tests
Connector placement is double-checked to ensure hassle-free installation.Drop tests
Drop tests from various heights ensure durability.Salt and spray tests
Tested for I/O reliability, prolonged lifespan and rust-resistance.- Max boost for AMD Ryzen processors is the maximum frequency achievable by a single core on the processor running a bursty single-threaded workload. Max boost will vary based on several factors, including, but not limited to: thermal paste; system cooling; motherboard design and BIOS; the latest AMD chipset driver; and the latest OS updates. GD-150
- Overclocking and/or undervolting AMD processors and memory, including without limitation, altering clock frequencies / multipliers or memory timing / voltage, to operate outside of AMD’s published specifications will void any applicable AMD product warranty, even when enabled via AMD hardware and/or software. This may also void warranties offered by the system manufacturer or retailer. Users assume all risks and liabilities that may arise out of overclocking and/or undervolting AMD processors, including, without limitation, failure of or damage to hardware, reduced system performance and/or data loss, corruption or vulnerability. GD-106
- Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
- All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
- Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
- PCB color and bundled software versions are subject to change without notice.
- Brand and product names mentioned are trademarks of their respective companies.
- The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
- Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
- *Precise specifications and features vary by model. Please refer to the specification page
- The product (electrical, electronic equipment, Mercury-containing button cell battery) should not be placed in municipal waste. Check local regulations for disposal of electronic products.
- The use of trademark symbol (™, ®) appears on this website means that the word text, trademarks, logos or slogans, is being used as trademark under common laws protection and/or registered as Trademark in U.S. and/or other country/region.
About ASUS
ASUS is a multinational company best known for their motherboards, PCs, monitors, graphics cards and routers. Along with an expanding range of superior gaming, content-creation and AIoT solutions, ASUS leads the industry through cutting-edge design and innovations made to create the most ubiquitous, intelligent, heartfelt and joyful smart life for everyone. With a global workforce that includes more than 5,000 R&D professionals, ASUS is driven to become the world’s most admired innovative leading technology enterprise.
About ROG
Republic of Gamers (ROG) is an ASUS sub-brand dedicated to creating the world’s best gaming hardware and software. Formed in 2006, ROG offers a complete line of innovative products known for performance and quality, including motherboards, graphics cards, laptops, desktops, monitors, audio equipment, routers and peripherals. ROG participates in and sponsors major international gaming events. ROG gear has been used to set hundreds of overclocking records and it continues to be the preferred choice of gamers and enthusiasts around the world.
© 2022 ASUS Computer International. All Rights Reserved. ASUS is a registered trademark of ASUSTeK Computer. All specifications and terms are subject to change without notice. Please check with your supplier for exact offers on selected models. Products may not be available in all markets. Product may not be exactly as shown in photos. Actual colors may differ from their appearance due to variation of monitor restrictions and color processing. All trademarks are registered to their respective companies. ASUS shall not be liable for technical or editorial errors or omissions contained herein.
ASUS is a multinational company best known for their motherboards, PCs, monitors, graphics cards and routers. Along with an expanding range of superior gaming, content-creation and AIoT solutions, ASUS leads the industry through cutting-edge design and innovations made to create the most ubiquitous, intelligent, heartfelt and joyful smart life for everyone. With a global workforce that includes more than 5,000 R&D professionals, ASUS is driven to become the world’s most admired innovative leading technology enterprise.
About ROG
Republic of Gamers (ROG) is an ASUS sub-brand dedicated to creating the world’s best gaming hardware and software. Formed in 2006, ROG offers a complete line of innovative products known for performance and quality, including motherboards, graphics cards, laptops, desktops, monitors, audio equipment, routers and peripherals. ROG participates in and sponsors major international gaming events. ROG gear has been used to set hundreds of overclocking records and it continues to be the preferred choice of gamers and enthusiasts around the world.
© 2022 ASUS Computer International. All Rights Reserved. ASUS is a registered trademark of ASUSTeK Computer. All specifications and terms are subject to change without notice. Please check with your supplier for exact offers on selected models. Products may not be available in all markets. Product may not be exactly as shown in photos. Actual colors may differ from their appearance due to variation of monitor restrictions and color processing. All trademarks are registered to their respective companies. ASUS shall not be liable for technical or editorial errors or omissions contained herein.
ASUS PRIME B650M-A AX - Motherboard - micro ATX - Socket AM5 - AMD B650 Chipset - USB 3.2 Gen 1, USB 3.2 Gen 2, USB-C 3.2 Gen 1 - 2.5 Gigabit LAN, Wi-Fi 6, Bluetooth - onboard graphics (CPU required) - HD Audio (8-channel)
Product Description | ASUS PRIME B650M-A AX - motherboard - micro ATX - Socket AM5 - AMD B650 |
Product Type | Motherboard - micro ATX |
Chipset Type | AMD B650 |
Processor Socket | 1 x Socket AM5 |
Compatible Processors | Ryzen (supports Ryzen 7000 Series) |
Max RAM Size | 128 GB |
RAM Supported | 4 DIMM slots - DDR5, non-ECC, ECC, on-die ECC, unbuffered |
Storage Ports | 6 x SATA-600 (RAID), 2 x SATA-600, 2 x M.2 |
USB / FireWire Ports | 2 x USB 3.2 Gen 2 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 + (1 x USB-C 3.2 Gen 1 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers) |
Audio | HD Audio (8-channel) |
LAN | 2.5 Gigabit Ethernet, 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
General
Product Type | Motherboard - micro ATX |
Chipset Type | AMD B650 |
Processor Socket | Socket AM5 |
Max Processors Qty | 1 |
Compatible Processors | Ryzen (supports Ryzen 7000 Series) |
Supported RAM
Max Size | 128 GB |
Technology | DDR5 |
Bus Clock | 5400 MHz (O.C.), 5600 MHz (O.C.), 4800 MHz, 5200 MHz, 5000 MHz |
Supported RAM Integrity Check | Non-ECC, ECC, on-die ECC |
Registered or Buffered | Unbuffered |
Features | Dual channel memory architecture, AMD EXPO technology |
Audio
Type | HD Audio (8-channel) |
Compliant Standards | High Definition Audio |
LAN
Network Interfaces | 2.5 Gigabit Ethernet, 802.11a/b/g/n/ac/ax, Bluetooth 5.2 |
Expansion / Connectivity
Expansion Slots |
1 x CPU
4 x DIMM 288-pin 1 x PCIe 4.0 x16 3 x PCIe 4.0 x16 (x1 mode) 2 x M.2 socket (2242/2260/2280 M.2 Key M slot) |
Storage Interfaces |
SATA-600 -connectors: 6 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10
PCIe 5.0 -connectors: 1 x M.2 - RAID 0 / RAID 1 / RAID 10 PCIe 4.0 -connectors: 1 x M.2 - RAID 0 / RAID 1 / RAID 10 SATA-600 -connectors: 2 x 7pin Serial ATA |
RAID Features | AMD RAID Xpert2 Technology |
Interfaces |
1 x HDMI
1 x DisplayPort 1 x VGA 2 x USB 3.2 Gen 2 2 x USB 3.2 Gen 1 4 x USB 2.0 1 x LAN (2.5Gigabit Ethernet) 1 x audio line-out - mini-jack 1 x audio line-in - mini-jack 1 x microphone - mini-jack 1 x PS/2 keyboard / mouse |
Internal Interfaces |
1 x USB-C 3.2 Gen 1 - header
2 x USB 3.2 Gen 1 - header 4 x USB 2.0 - header 1 x serial - header 1 x audio - header 1 x SPDIF out - header 1 x speaker - header 1 x SPI - header |
Power Connectors | 24-pin main power connector, 8-pin ATX12V connector |
Features
BIOS Type | AMI |
BIOS Features | UEFI BIOS, ASUS EZ Flash 3 |
Sleep / Wake Up | Wake on LAN (WOL), wake on PME |
Hardware Features | Jack retasking, ASUS Q-Design, Q-DIMM, ASUS EZ DIY, Q-Slot, CrashFree BIOS 3, audio jack detect technology, ASUS DIGI+ VRM, ASUS Stainless Steel Back I/O, LANGuard, overvoltage protection, ASUS 5X Protection III, ASUS Aura Sync, ASUS OptiMem II, ASUS SafeSlot Core+, DIY Friendly Design, Q-LED Core, VRM heatsink design, BIOS FlashBack button, BIOS FlashBack LED |
Miscellaneous
Included Accessories | IO shield, ASUS Wi-Fi moving antenna, M.2 screw package |
Cables Included | 2 x Serial ATA cable |
Software Included | ASUS CPU-Z, ASUS AI Suite III, WinRAR, Norton AntiVirus (Trial), Armoury Crate |
Compliant Standards | CEC Tier II |
Width | 9.6 in |
Depth | 9.6 in |