Asus Prime B550M-A WIFI II Desktop Motherboard - AMD B550 Chipset - Socket AM4 - Micro ATX - Ryzen 3, Ryzen 5, Ryzen 7, Ryzen 9, Ryzen (PRIME B550M-A WIFI II)

Marketing Information:

AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

• AMD AM4 Socket: Ready for Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
• Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility
• Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
• Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware

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.

All-around Energy Efficiency

With the Energy Processing Unit (EPU), you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.

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.

VRM Heatsink and Thermal Pads

A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.

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.

Outstanding AudioCombined onboard features deliver elevated audio

Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.

Audio Shielding

Separates analog/digital signal domains, significantly reducing multi-lateral interference.

Separate Layer for Left and Right Tracks

Ensures minimal crosstalk between audio paths.

Chipset Manufacturer: AMD

Chipset Model: B550

Total Processor Supported: 1

Processor Socket: Socket AM4

Processor Supported: Ryzen 3,Ryzen 5,Ryzen 7,Ryzen 9,Ryzen 5 Pro,Ryzen 7 PRO,Ryzen 9 PRO,Ryzen 3 PRO

Number of Memory Slots: 4

Memory Form Factor: DIMM,UDIMM

Maximum Memory Supported: 128 GB

Memory Speed Supported: 2133 MHz,2400 MHz,2667 MHz,2800 MHz,3000 MHz,3200 MHz,3333 MHz,3466 MHz,3866 MHz,3600 MHz,3733 MHz,4000 MHz,4133 MHz,4466 MHz,4600 MHz,4400 MHz,4800 MHz,4266 MHz,4866 MHz,4333 MHz

Memory Technology: DDR4 SDRAM

Controller Type: Serial ATA/600

RAID Supported: Yes

RAID Levels: 0,10,1

Onboard Video: CPU Dependent Video

Audio Channels: 7.1

Bluetooth: Yes

Gigabit Ethernet: Yes

Wireless LAN: Yes

Wireless LAN Standard: IEEE 802.11 a/b/g/n/ac/ax

Total Number of Expansion Slots: 3.0

Total Number of PCI Express Slots: 3

Number of PCI Express x1 Slots: 2

Number of PCI Express x16 Slots: 1

Total Number of USB Ports: 6

Number of USB 3.2 Ports: 6

VGA: Yes

HDMI: Yes

DVI: Yes

Number of Network (RJ-45) Ports: 1

Number of SATA Interfaces: 4

Number of M.2 Interfaces: 2

Total Number of Onboard USB Ports: 6

Number of Onboard USB 2.0 Ports: 4

Number of Onboard USB 3.2 Ports: 2

Onboard S/PDIF Header: Yes

Form Factor: Micro ATX

Width: 9.61" (244 mm)

Depth: 9.61" (244 mm)