Overview
The ASUS TUF GAMING B550-PLUS WIFI II is an ATX motherboard built around the AMD B550 chipset and AM4 socket. It supports selected AMD Ryzen 5000, Ryzen 5000 G-Series, Ryzen 4000 G-Series, and Ryzen 3000 Series desktop processors, subject to the CPU support list and installed BIOS version.
The motherboard provides four DDR4 DIMM slots supporting up to 128 GB of dual-channel memory, with overclocked memory speeds listed up to DDR4-4866. Its primary PCIe x16 slot supports PCIe 4.0 with compatible Ryzen 5000 or 3000 Series processors; selected G-Series processors limit that slot to PCIe 3.0. Storage includes two M.2 sockets and six SATA 6 Gb/s ports, with the primary M.2 slot supporting PCIe 4.0 x4 on supported CPUs.
For networking, the board integrates Wi-Fi 6 (802.11ax), Bluetooth 5.2, and Realtek 2.5 Gigabit Ethernet. Rear connectivity includes USB 3.2 Gen 2 Type-A and Type-C ports, USB 3.2 Gen 1, USB 2.0, HDMI 2.1, and DisplayPort 1.2. Video output requires a compatible processor with integrated graphics.
ASUS TUF platform features include digital power delivery with Dr. MOS, M.2 heatsinking, BIOS FlashBack, Q-LED diagnostics, TUF LANGuard, ESD protection, and Aura Sync RGB headers. The board suits gaming and general-purpose desktop builds that need AM4 compatibility, fast wired networking, Wi-Fi 6, and PCIe 4.0 storage and graphics support.
Key Features
AM4 socket supports selected AMD Ryzen desktop processors
Four DDR4 DIMM slots support up to 128 GB of memory
Two M.2 sockets and six SATA 6 Gb/s storage connections
Wi-Fi 6, Bluetooth 5.2 and 2.5 Gigabit Ethernet
PCIe 4.0, BIOS FlashBack and Aura Sync RGB support
Technical Specifications
| Specification | Details |
|---|
| Brand | ASUS |
| Part Number | TUF GAMING B550-PLUS WIFI II |
| Product Type | ATX gaming motherboard |
| Chipset | AMD B550 |
| CPU Socket | AMD AM4 |
| Processor Compatibility | Selected Ryzen 5000, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors; verify CPU support list |
| Memory Type | DDR4 unbuffered DIMM |
| Memory Slots | 4 × DIMM |
| Maximum Memory Capacity | 128 GB |
| Memory Architecture | Dual-channel |
| Maximum Listed Memory Speed | Up to DDR4-4866 (OC); CPU and configuration dependent |
| Primary Graphics Slot | 1 × PCIe 4.0 x16 with supported Ryzen 5000/3000 CPUs; PCIe 3.0 x16 with supported G-Series CPUs |
| Additional Expansion | 1 × PCIe 3.0 x16 (x4 mode); 3 × PCIe 3.0 x1 |
| M.2 Storage | 2 × Key M, sizes 2242/2260/2280/22110 |
| Primary M.2 Interface | PCIe 4.0 x4 or SATA, depending on CPU |
| Secondary M.2 Interface | PCIe 3.0 x4 or SATA |
| SATA Storage | 6 × SATA 6 Gb/s |
| RAID Support | RAID 0, 1 and 10 |
| Wireless Networking | Wi-Fi 6, dual-band 2.4/5 GHz, 2×2 |
| Bluetooth | Bluetooth 5.2 |
| Wired Networking | 1 × Realtek 2.5Gb Ethernet |
| Rear USB | 1 × USB 3.2 Gen 2 Type-A, 1 × USB 3.2 Gen 2 Type-C, 4 × USB 3.2 Gen 1 Type-A, 2 × USB 2.0 Type-A |
| Display Outputs | 1 × HDMI 2.1, 1 × DisplayPort 1.2; requires compatible integrated graphics |
| Audio | Realtek 7.1-channel HD audio; optical S/PDIF output |
| Internal RGB Headers | 2 × Aura RGB and 2 × Addressable Gen 2 RGB |
| Firmware Features | UEFI BIOS, ASUS EZ Flash 3, CrashFree BIOS 3, BIOS FlashBack |
| Form Factor | ATX |
| Dimensions | 30.5 × 24.4 cm |
| Operating System | ASUS lists Windows 10 64-bit in its specifications; check current OS and driver support |
| Package Contents | Motherboard, 2 × SATA cables, I/O shield, Wi-Fi antennas, M.2 mounting accessories, documentation and listed accessories |
Product Note
This motherboard uses the AM4 socket and DDR4 memory; it is not compatible with AM5 processors or DDR5 DIMMs. PCIe and M.2 speeds depend on the installed CPU. When the secondary M.2 slot is populated, SATA ports 5 and 6 are disabled due to shared bandwidth. The HDMI and DisplayPort outputs require a CPU with integrated graphics. Verify the exact processor support, BIOS version, and package contents before ordering.
Frequently Asked Questions
Which processors are compatible with the ASUS TUF GAMING B550-PLUS WIFI II?
It supports selected AMD Ryzen 5000, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors. Check ASUS's CPU support list for the exact processor and required BIOS version.
How much memory can this motherboard support?
It supports up to 128 GB of DDR4 memory across four DIMM slots in a dual-channel configuration. Maximum memory speed depends on the CPU, DIMMs, and BIOS settings.
Does the motherboard support PCIe 4.0 SSDs?
Yes. The primary M.2 slot supports PCIe 4.0 x4 with compatible Ryzen 5000 and 3000 Series processors. Supported G-Series CPUs limit the primary M.2 interface to PCIe 3.0 x4.
What networking features are integrated?
It includes dual-band Wi-Fi 6, Bluetooth 5.2, and a 2.5 Gigabit Ethernet port for wired networking.
Can the motherboard provide display output without a graphics card?
Only when the installed processor includes integrated graphics and supports the selected output. CPUs without integrated graphics require a dedicated graphics card.
Is this motherboard suitable for a gaming PC?
Yes. It supports compatible AM4 Ryzen processors, DDR4 memory, PCIe 4.0 with selected CPUs, M.2 SSDs, and 2.5GbE networking. It is not suitable for AM5 CPUs or DDR5-based builds.
