Asus PRIME B850M A WIFI CSM AMD Micro-ATX Motherboard
Asus PRIME B850M A WIFI CSM AMD Micro-ATX Motherboard
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 9000 series processors. The PRIME B850M-A WIFI-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.
Features:
- 8+2+1:phase digital power design
- AEMP:for enhanced DDR5 performance
- 2.5Gb Ethernet:for faster data transfers
- WiFi 6E:for stable WiFi connection and lower latency
- USB 5Gbps Type-C:for rapid data transmission
- PCIe 5.0 slots:for graphics card and storage
- EZ PC DIY:for easier build customization
- Pre-mounted I/O shield:for safeguarding ports and enhancing aesthetics
- Aura Sync:for full RGB lighting control
Specifications:
- Model :PRIME B850M-A WIFI-CSM
- CPU :AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors*
* Refer to Official Asus Website for CPU support list. - Chipset :AMD B850 Chipset
- Memory :4 x DIMM slots, max. 256GB, DDR5 Supports up to 8000+MT/s (OC) with Ryzen 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC Un-buffered DIMM*
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
* 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 list under the Support tab of product information site or visit Official Asus Website . Adjustments will be made based on the specifications of mass-produced memory products available on the market.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function. - Graphics :2 x DisplayPort**
1 x HDMI port***
* Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
** Supports max. 8K@30Hz as specified in DisplayPort 1.4.
*** Supports 4K@60Hz as specified in HDMI 2.1. - Expansion Slots :AMD Ryzen 9000 & 7000 Series Desktop Processors*
1 x PCIe 5.0 x16 slot (supports x16 mode)
AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
AMD B850 Chipset
1 x PCIe 4.0 x16 slot (supports x1 mode)
* Please check the PCIe bifurcation table on the support site .
** Specifications vary by CPU types.
- To ensure compatibility of the device installed, please refer to Official Asus Website for the list of supported - Storage :Supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
AMD Ryzen 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4/x2 mode)*
AMD B850 Chipset
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
4 x SATA 6Gb/s ports
* Specifications vary by CPU types.
AMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10 - Ethernet :1 x Realtek 2.5Gb Ethernet
ASUS LANGuard - Wireless & Bluetooth :Wi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band*
Bluetooth v5.3**
* WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.
** The Bluetooth version may vary, please refer to the Wi-Fi module manufacturer's website for the latest specifications. - USB :Rear USB (Total 8 ports)
2 x USB 10Gbps ports (2 x Type-A )
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
Front USB (Total 7 ports)
1 x USB 5Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
* USB Type-C power delivery output: max. 5V/3A - Audio :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 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. - Back Panel I/O Ports :2 x USB 10Gbps ports (2 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
2 x DisplayPort
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 - Internal I/O Connectors :Fan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 x 4-pin Chassis Fan headers
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connectors
1 x 4-pin +12V CPU Power connectors
Storage Related
3 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 x USB 5Gbps connector (supports USB Type-C )
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Miscellaneous
3 x Addressable RGB Gen 2 headers
1 x Clear CMOS header
1 x Chassis Intrusion header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header - Special Features :ASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- Pre-mounted I/O shield
Aura Sync
- Addressable RGB Gen 2 headers - Software Features :ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
ASUS AI Advisor
ASUS Driver Hub
ASUS GlideX
TurboV Core
ASUS CPU-Z
Norton 360 Deluxe (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkey - BIOS :256 Mb Flash ROM, UEFI AMI BIOS
- Manageability :WOL by PME, PXE
- Accessories :Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x M.2 rubber package
2 x Screw packages for M.2 SSD
Documentation
1 x Quick start guide
1 x ACC Express activation key card - Operating System :Windows 11, Windows 10 64-bit
- Form Factor :mATX Form Factor
9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
Shipping Information
- All items ship to the buyer's registered eBay address.
- Dispatch generally occurs within 1 business day of cleared payment.
- Delivery relies on AU Post and leading courier networks, typically taking 1-5 business days depending on location.
Payment Methods
- All payments are securely processed and managed by eBay.
- Immediate payment is required to secure your item.
- eBay accepts a wide variety of payment methods including Credit/Debit Cards, PayPal, Apple Pay, Google Pay, and Afterpay.
- Tax invoices can be supplied upon request.
Returns & Warranty
- Change of mind returns are accepted within 30 days, provided the item is unopened in original packaging (restocking fee may apply).
- All hardware comes with the stated manufacturer warranty.
- In the rare event of a DOA (Dead on Arrival) component, please contact us within 7 days for a rapid resolution.
About SMART_CHOICE_AU
We are a dedicated Australian IT retailer providing high-quality computer parts, networking gear, and enterprise solutions. With a focus on fast dispatch and expert service, we keep your business and home tech running smoothly. As a 100% genuine Australian company, you can trust us to provide local stock with no overseas shipping delays.