

· B550M-AThe ASUS PRIME B550M-A WIFI II is a reliable, budget-friendly Micro-ATX motherboard utilizing the AMD AM4 socket, engineered to support AMD Ryzen 5000, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors. It features four DDR4 DIMM slots accommodating up to 128GB of dual-channel system memory with overclocked frequencies reaching 4866 MHz (OC). For hardware expansion and data storage, the layout provides a primary steel-reinforced PCIe 4.0 x16 expansion SafeSlot, two PCIe 3.0 x1 slots, and dual NVMe M.2 slots (including one high-bandwidth PCIe 4.0 x4 slot). Its comprehensive network matrix natively integrates an advanced Wi-Fi 6 (802.11ax) module, Bluetooth 5.2, and Realtek 1Gb Ethernet. The board is built with VRM and PCH passive heatsinks, featuring dual USB 3.2 Gen 2 Type-A ports, Aura Sync RGB headers, Realtek 7.1 HD surround sound, and a multi-display output configuration containing HDMI 2.1 (4K@60Hz), DVI-D, and legacy D-Sub (VGA) ports.



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| Form Factor | Socket AM4 (Micro-ATX Form Factor) |
|---|---|
| Brand & Lineage | ASUS PRIME B550M-A WIFI II (AMD B550 Chipset, Socket AM4 Platform, Micro-ATX Form Factor) |
| Target Segment | Mainstream Desktop PCs, Home & Office Productivity, System Integrator Builds |
| Processor Compatibility | AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series Desktop Processors |
| Thermal & Power Design | VRM Heatsink, PCH Heatsink, Hybrid Fan Headers, Fan Xpert 2+ |
| System Memory Architecture | 4 x DDR4 DIMM Slots (Max Capacity: Up to 128 GB, Dual-Channel Architecture) |
|---|---|
| Speeds & Overclocking | Up to DDR4-4866+ MHz (OC) / 3200 - 2133 MHz Native |
| Types Supported | Un-buffered DDR4 Memory (ECC support varies by CPU model) |
| PCIe Slots | 2 x PCIe 3.0 x1 Slots |
|---|---|
| Ryzen 5000 & 3000 Series | 1 x PCIe 4.0 x16 Slot (supports x16 mode) |
| Ryzen 5000 G-Series & 4000 G-Series | 1 x PCIe 3.0 x16 Slot (supports x16 mode) |
| M.2 Slots | 2 x M.2 Sockets (Key M) |
|---|---|
| Ports | 4 x SATA 6Gb/s Ports |
| M.2_1 (CPU) | Type 2242/2260/2280/22110 (PCIe 4.0 x4 & SATA modes with Ryzen 5000/3000; PCIe 3.0 x4 & SATA modes with Ryzen 4000G) |
| M.2_2 (Chipset) | Type 2242/2260/2280 (PCIe 3.0 x4 & SATA modes) |
| RAID Support | Supports SATA RAID 0, RAID 1, and RAID 10 |
| Features | Up to 24-Bit/192 kHz Playback, Audio Shielding, Dedicated Audio PCB Layers, Premium Audio Capacitors, LED-Illuminated Audio Trace Path Design, Jack-detection, Multi-streaming, Front Panel Jack-retasking |
|---|---|
| Audio Controller | Realtek 7.1 Surround Sound High Definition Audio CODEC |
| Networking | 1 x Realtek 1Gb Ethernet with ASUS LANGuard |
|---|---|
| Wireless & Bluetooth | 2x2 Wi-Fi 6 (802.11ax, 2.4GHz / 5GHz) + Bluetooth 5.2 |
| Rear Panel USB (6 Ports) | 2 x USB 3.2 Gen 2 (10Gbps) Type-A, 4 x USB 3.2 Gen 1 (5Gbps) Type-A |
|---|---|
| Front Panel USB (6 Ports) | 1 x USB 3.2 Gen 1 header (supports 2 Type-A ports), 2 x USB 2.0 headers (support 4 ports) |
| Cooling Headers | 1 x 4-pin CPU Fan, 1 x 4-pin CPU OPT Fan, 2 x 4-pin Chassis Fan |
|---|---|
| Power Connectors | 1 x 24-pin Main Power, 1 x 8-pin +12V Power |
| Specialized Headers | 1 x SPI TPM Header (14-1pin), 1 x COM Port Header, 1 x S/PDIF Out Header, 1 x Clear CMOS Header, 1 x Speaker Header, 1 x Front Panel Audio Header (AAFP), 1 x 10-1 pin System Panel Header |
| Lighting Headers | 1 x Addressable Gen 2 Header, 2 x AURA RGB Headers (Aura Sync) |
| Rear I/O | HDMI 2.1, DVI-D, D-Sub (VGA), PS/2 Keyboard/Mouse Combo, 1Gb Ethernet LAN, Wi-Fi Module Antenna Ports, 3 x HD Audio Jacks, 2 x USB 3.2 Gen 2 Type-A, 4 x USB 3.2 Gen 1 Type-A |
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| Warranty | 3 Years Company Warranty |
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