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ASUS PRIME B550M-A WIFI II Micro-ATX Motherboard – AMD AM4, 4× DDR4 DIMMs, Up to 4866+ MT/s (OC), PCIe 4.0 x16, Dual M.2 Slots, Wi-Fi 6, Realtek 1GbE, 7.1-Channel 24-Bit/192kHz Audio, AURA Sync RGB & HDMI 2.1/DVI/VGA

ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
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ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
ASUS PRIME B550M-A WIFI II AM4 micro-ATX motherboard with Wi-Fi 6, PCIe 4.0 x16, dual M.2 slots, 4 DDR4 slots and Realtek 7.1 audio shielding
Tags: ASUS , PRIME , B550M-A WIFI II , AM4 , Micro-ATX , DDR4 , 128GB Max , 4866+ MT/s OC , Wi-Fi 6 , Bluetooth 5.2 , PCIe 4.0 x16 , Dual M.2 , 4x SATA , RAID 0/1/10 , Realtek 1GbE , 7.1 HD Audio , AURA Sync , 2× RGB + 1× ARGB , 5X Protection III , OptiMem II , HDMI 2.1 , DVI-D , VGA
ASUS PRIME B550M-A WIFI II Micro-ATX Motherboard – AMD AM4, 4× DDR4 DIMMs, Up to 4866+ MT/s (OC), PCIe 4.0 x16, Dual M.2 Slots, Wi-Fi 6, Realtek 1GbE, 7.1-Channel 24-Bit/192kHz Audio, AURA Sync RGB & HDMI 2.1/DVI/VGA
  • Stock: Coming Soon
  • Model: PRIME B550M-A WIFI II
  • MPN: 90MB19X0-M0EAY0
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Description

Model Name
PRIME B550M-A WIFI II
Brand
ASUS
Form Factor
Micro-ATX (24.4 cm × 24.4 cm / 9.6 inch × 9.6 inch)
Processor & Chipset Specifications
  • CPU Socket: AMD AM4
  • CPU Support: AMD Ryzen™ 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series Desktop Processors
  • Chipset: AMD B550
Memory Specifications
  • Slots: 4 × DIMM Slots
  • Maximum Capacity: Up to 128 GB
  • Memory Type: DDR4 (Dual-Channel Architecture)
  • Supported Speeds: Up to 4866+ MT/s (O.C.), 4800 (O.C.), 4600 (O.C.), 4400 (O.C.), 4266 (O.C.), 4000 (O.C.), 3600 (O.C.), 3200, 3000, 2933, 2666, 2400, 2133 MHz
  • Memory Features: ECC Memory support (varies by CPU), ASUS OptiMem II technology for improved stability and lower latencies
Expansion & Storage Specifications
  • PCIe Slots:
    • 1 × PCIe 4.0 x16 slot (supports x16 mode with Ryzen 5000/3000)
    • 1 × PCIe 3.0 x16 slot (supports x16 mode with Ryzen 5000G/4000G)
    • 2 × PCIe 3.0 x1 slots (via B550 Chipset)
  • M.2 Slots: 2 × M.2 Slots Total
    • M.2_1: Type 2242/2260/2280/22110 (Supports PCIe 4.0 x4 & SATA modes with Ryzen 5000/3000, or PCIe 3.0 x4 with Ryzen 4000G)
    • M.2_2: Type 2242/2260/2280 (Supports PCIe 3.0 x4 & SATA modes via B550 Chipset)
  • SATA Ports: 4 × SATA 6Gb/s ports
  • RAID Support: AMD RAIDXpert2 Technology (RAID 0, 1, 10)
Connectivity & I/O Ports
  • Rear I/O Ports:
    • 1 × PS/2 Keyboard/Mouse combo port
    • 1 × HDMI 2.1 port (4K@60Hz)
    • 1 × DVI-D port
    • 1 × D-Sub (VGA) port
    • 2 × USB 3.2 Gen 2 Type-A ports (10Gbps)
    • 4 × USB 3.2 Gen 1 Type-A ports (5Gbps)
    • 1 × Realtek 1 Gb Ethernet (RJ45) port (with ASUS LANGuard)
    • 1 × Wi-Fi Module (Antenna connectors)
    • 3 × Audio jacks
  • Internal Headers:
    • 1 × USB 3.2 Gen 1 header (supports 2 additional ports)
    • 2 × USB 2.0 headers (support 4 additional ports)
    • 1 × COM Port header
    • 1 × Front Panel Audio header (AAFP)
    • 1 × S/PDIF Out header
    • 1 × SPI TPM header (14-1 pin)
Audio Specifications
  • Audio Codec: Realtek 7.1 Surround Sound High Definition Audio CODEC
  • Audio Features:
    • LED-illuminated audio trace path design
    • Audio Shielding to isolate analog/digital signals
    • Dedicated audio PCB layers
    • Premium audio capacitors
    • Supports up to 24-Bit/192 kHz playback, Jack-detection, and Multi-streaming
Wireless & Networking Specifications
  • Wi-Fi: Wi-Fi 6 (802.11 a/b/g/n/ac/ax), 2×2, supports 2.4/5GHz frequency bands
  • Bluetooth: Bluetooth v5.2
Special Features & Build Quality

  • ASUS 5X Protection III: DIGI+ VRM, LANGuard, Overvoltage Protection, SafeSlot Core, and Stainless-Steel Back I/O
  • ASUS Q-Design: Q-DIMM (easy memory installation) and Q-Slot (easy PCIe card removal)
  • Thermal Solution: Aluminum VRM heatsink design and Fan Xpert 2+ for comprehensive system cooling control
  • RGB Lighting: AURA Sync support with 2 × Standard AURA RGB headers and 1 × Addressable Gen 2 header
  • BIOS: 256 Mb Flash ROM, UEFI AMI BIOS with ASUS EZ Flash 3, CrashFree BIOS 3, and EZ Mode
  • Software Bundle: Armoury Crate (AURA Creator, AURA Sync), AI Suite 3 (TurboV EVO, EPU, DIGI+ VRM, Fan Xpert 2+), ASUS CPU-Z, MyASUS, and Norton Anti-virus (Free Trial)

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