ASUS PRIME B550M-A WIFI II AMD Ryzen Motherboard
ASUS PRIME B550M-A WIFI II AMD Ryzen Motherboard
SKU:MBA-B550M-A-PRIMEWF2
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Product Information
| Brand | ASUS |
|---|---|
| Category | Motherboards |
| SKU | MBA-B550M-A-PRIMEWF2 |
| Availability | Out of Stock |
Overview
- The ASUS PRIME B550M-A WIFI II is a feature-rich micro-ATX motherboard built on the AMD B550 chipset, delivering modern connectivity and performance for Ryzen-based systems. Supporting Ryzen 5000, 4000G, and 3000 series processors, it combines PCIe 4.0 bandwidth for fast graphics and storage with dual M.2 slots and four SATA ports for flexible storage configuration.
The board excels in providing business-grade reliability through comprehensive thermal management, including dedicated heatsinks for the VRM and chipset, plus ASUS's Fan Xpert 2+ utility for intelligent cooling control. Built-in Wi-Fi 6 and Bluetooth 5.2 eliminate the need for separate wireless cards, whilst USB 3.2 Gen 2 ports and LANGuard protection ensure fast, secure data transfers.
With three display outputs (HDMI, DVI-D, D-Sub), it suits multi-monitor setups common in content creation and business environments. The micro-ATX form factor keeps system footprint compact without sacrificing expandability, making it ideal for office builds, creative workstations, and gaming systems where space matters.
Specifications
| Motherboard Model | PRIME B550M-A WIFI II |
|---|---|
| CPU Socket | AMD AM4 |
| Chipset | AMD B550 |
| Form Factor | Micro-ATX |
| Memory Slots | 4 x DIMM |
| Memory Type | DDR4 unbuffered |
| Memory Support | DDR4-2133 to DDR4-4866 (OC) |
| Maximum Memory | 128GB |
| Memory Architecture | Dual Channel |
| PCIe 4.0 Slots | 1 x PCIe 4.0 x16 slot (Ryzen 5000/3000 series) |
| PCIe 3.0 Slots | 2 x PCIe 3.0 x1 slots |
| M.2 Slot 1 | Type 2242/2260/2280/22110, PCIe 4.0 x4 & SATA (Ryzen 5000/3000) or PCIe 3.0 x4 & SATA (4000G) |
| M.2 Slot 2 | Type 2242/2260/2280, PCIe 3.0 x4 & SATA |
| SATA Ports | 4 x SATA 6Gb/s |
| RAID Support | RAID 0, 1, 10 |
| Display Outputs | 1 x HDMI, 1 x DVI-D, 1 x D-Sub |
| HDMI Version | HDMI 2.1 (4K@60Hz) |
| USB 3.2 Gen 2 | 2 x Type-A ports |
| USB 3.2 Gen 1 | 4 x Type-A ports |
| USB 3.2 Gen 1 Headers | 1 x internal header (supports 2 additional ports) |
| USB 2.0 Headers | 2 x internal headers (support 4 additional ports) |
| Wi-Fi Standard | Wi-Fi 6 (802.11ax) |
| Wi-Fi Configuration | 2x2 802.11a/b/g/n/ac/ax, 2.4GHz and 5GHz bands |
| Bluetooth Version | Bluetooth 5.2 |
| Ethernet | 1 x 1Gb Ethernet with LANGuard protection |
| Audio Codec | Realtek 7.1 Surround Sound High Definition Audio |
| Audio Features | Jack-detection, multi-streaming, front panel jack retasking, up to 24-Bit/192kHz playback |
| BIOS Flash | 256 Mb Flash ROM |
| BIOS Type | UEFI AMI BIOS |
| Manageability | Wake-on-LAN (WOL) by PME, PXE boot |
| VRM Heatsink | Yes |
| PCH Heatsink | Yes |
| Fan Headers | Hybrid fan headers with Fan Xpert 2+ utility |
| RGB Lighting | Aura Sync RGB, addressable Gen 2 header, RGB LED strip headers |
| Standard Warranty | 36 months |
| Extended Warranty | Up to 48 months with premium registration |
Key Features
Ideal For
FAQs
Which AMD Ryzen processors are compatible with the ASUS PRIME B550M-A WIFI II?
This motherboard supports AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors in the AM4 socket. For a complete compatibility list, refer to the ASUS website's official CPU support documentation.
Does this motherboard support PCIe 4.0?
Yes. The primary PCIe x16 slot supports PCIe 4.0 when paired with Ryzen 5000 or 3000 series processors. Ryzen 4000G-series processors use PCIe 3.0. The secondary M.2 slot and additional PCIe x1 slots run at PCIe 3.0.
What is the maximum amount of RAM this motherboard can support?
The ASUS PRIME B550M-A WIFI II supports up to 128GB of DDR4 memory across four DIMM slots. Memory frequency support depends on the CPU type and memory qualification—refer to ASUS's Memory QVL (Qualified Vendors Lists) for compatibility details.
Can I use both M.2 slots simultaneously?
Yes. The motherboard has two M.2 slots that can be used together. M.2_1 supports both PCIe and SATA modes (depending on CPU), whilst M.2_2 supports PCIe 3.0 x4 and SATA modes. Both slots support NVMe SSDs and SATA M.2 drives.
Is built-in Wi-Fi included on this motherboard?
Yes. The motherboard features Wi-Fi 6 (802.11ax) with 2x2 configuration, supporting both 2.4GHz and 5GHz bands, plus Bluetooth 5.2. No separate wireless card is required.
How many USB 3.2 Gen 2 ports are available?
The motherboard provides 2 x USB 3.2 Gen 2 Type-A ports on the rear I/O panel. Additionally, there is 1 x USB 3.2 Gen 1 header on the board that supports up to 2 additional USB 3.2 Gen 1 ports via case connectors.
What warranty does this motherboard come with?
The ASUS PRIME B550M-A WIFI II comes with a standard 36-month (3-year) warranty. ASUS offers an optional 4-year premium warranty through product registration.
Does this motherboard support RAID storage?
Yes. The motherboard supports RAID 0, 1, and 10 configurations across the four SATA ports and M.2 slots, allowing for flexible storage redundancy and performance options.
