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ASUS Prime B550M-A WIFI II mATX Motherboard for AMD Socket AM4 CPUs
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ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.
Tune It Your Way
Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity.
Cool to the Core
Prime B550 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.
Build on a Solid Foundation
Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.
Little Things Make a Big Difference
Prime B550 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.
CPU
- Installed Processors (Max): 0 (1)
- Supported Processor Manufacturer: AMD
- Supported Processors: AMD Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
- 64-bit Support: Yes
- Socket: AM4
Rear Panel I/O Ports
- USB Ports: 2 x USB 3.1
- 4 x USB 3.0
- HDMI Port: 1 x HDMI 2.1
- VGA Port: 1 x D-Sub
Internal I/O Connectors
- SATA Connectors: 4 x SATA III
- USB Connectors: 1 x USB 3.0 header (supports 2 ports)
- 2 x USB 2.0 headers (supports 4 ports)
- Speaker: 1 x Speaker header
Memory
- Memory Bus Speed: Up to 4866 MHz
- Memory Type: DDR4
Motherboard
- Northbridge: AMD B550
- RAID Supported: Yes
- RAID Format: RAID 0, 1, 10
- SATA Supported: Yes
Rear Panel I/O Ports
- Keyboard/Mouse Combo Port: 1 x PS/2
- RJ-45 Ports: 1 x RJ-45
- Digital Port: 1 x DVI-D
- Audio Line In Ports: 1 x 3.5mm Jack
- Audio Line Out Ports: 1 x 3.5mm Jack
- Microphone In Port: 1 x 3.5mm Jack
- Antenna Connector(s): 2 x SMA Antenna
Internal I/O Connectors
- Front Panel Connectors: 1 x Front Panel
- 1 x Front Audio
- Cooling Fan Support: 1 x CPU fan header
- 1 x CPU OPT fan header
- 2 x Chassis fan headers
- Serial Connectors: 1 x COM header
- TPM Header: 1 x SPI TPM header
- Power Connector Port: 1 x 24-pin ATX
- 1 x 8-pin EPS
- Other Connectors: 1 x M.2 slot, Key M, Type 2242/2260/2280/22110 (PCIe Gen4 or SATA)
- 1 x M.2 slot, Key M, Type 2242/2260/2280/22110 (PCIe Gen3 or SATA)
- 1 x M.2 slot, Key M, Type 2242/2260/2280 (PCIe Gen3 or SATA)
- 1 x 3-pin ARGB LED headers
- 2 x 4-pin RGB LED headers
Expansion
- Number of PCI Express Slots: 1 x PCI Express 4.0 x16 slot
- 2 x PCI Express 3.0 x1 slots
Memory
- Maximum RAM: 128 GB
- Memory Slot: 4 x DIMM
Graphics Device
- Integrated Graphics Supported: Yes (CPU dependant)
Sound
- Integrated Sound: Realtek
Warranty
- Warranty: 3 Years
Network
- Integrated Network: Realtek
- Network Speeds Supported: Up to 1 Gbps
- Wireless LAN: Yes (Wi-Fi 6)
- Bluetooth: Yes
- Bluetooth Version: 5.2
System Requirements
- Operating Systems Supported: Microsoft Windows 11 / 10 64-bit
System
- Jumpers: 1 x Clear CMOS
- Software Included: Yes
- Drivers: Yes
Physical
- Form Factor: mATX Motherboard
- In The Box: Motherboard
- 2 x SATA Cables
- ASUS Wi-Fi Moving Antennas
- I/O Shield
- M.2 SSD Screw Package
- Support DVD
- User Manual
- Width: 244 mm
- Length: 244 mm
Identifiers
- Stock Code: MBD3327
- Mfg Code: 90MB19X0-M0EAY0
Warranty
- Warranty: 3 Years
