Product Name: ITW | ASUS Prime B550M-A WiFi II AM4 Micro-ATX DDR4 Gaming Motherboard
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
Specifications
Model
✎ PRIME B550M-A WIFI II
CPU
✎ AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
Chipset
✎ B550
Memory
✎ 4 x DIMM, Max. 128GB, DDR4 4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory*
✎ Dual Channel Memory Architecture
* ECC memory (ECC mode) support varies by CPU.
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.
Graphics
✎ 1 x D-Sub port
✎ 1 x DVI-D port
✎ 1 x HDMI® port**
* Graphics specifications may vary between CPU types.
** Supports 4K@60Hz as specified in HDMI 2.1.
Expansion Slots
✎ AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors
■ 1 x PCIe 4.0 x16 slot (supports x16 mode)
✎ AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors
■ 1 x PCIe 3.0 x16 slot (supports x16 mode)
✎ AMD B550 Chipset
■ 2 x PCIe 3.0 x1 slots
Storage
Supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
✎ AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors
■ M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)
■ AMD Ryzen™ 4000 G-Series Desktop Processors
■ M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
✎ AMD B550 Chipset
■ M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)
■ 4 x SATA 6Gb/s ports
■ Support RAID 0, 1, 10
Ethernet
✎ 1 x Realtek 1Gb Ethernet
✎ ASUS LANGuard
Wireless & Bluetooth
✎ 2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) + BT5.2
✎ Wi-Fi 6
✎ 2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
✎ Supports 2.4/5GHz frequency band
✎ Bluetooth v5.2
USB
✎ Rear USB:Total 6 ports
■ 2 x USB 3.2 Gen 2 ports (2 x Type-A)
■ 4 x USB 3.2 Gen 1 ports (4 x Type-A)
✎ Front USB:Total 6 ports
■ 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
■ 2 x USB 2.0 headers support additional 4 USB 2.0 ports
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
■ LED-illuminated audio trace path design
■ 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 3.2 Gen 2 ports (2 x Type-A)
✎ 4 x USB 3.2 Gen 1 ports (4 x Type-A)
✎ 1 x D-Sub port
✎ 1 x DVI-D port
✎ 1 x HDMI® port
✎ 1 x Wi-Fi Module
✎ 1 x Realtek 1Gb Ethernet port
✎ 3 x Audio jacks
✎ 1 x PS/2 Keyboard/Mouse combo port
Operating System
✎ Windows® 11, Windows® 10 64-bit
Form Factor
✎ microATX / 24.4cm x 24.4cm
