Asus TUF Gaming B550M Plus Wifi II DDR4 AMD Motherboard
MPN ASUS-TUF-GAMING-B550M-PLUS-WIFI-II · Brand ASUS · microATX24.4cm x 24.4cm
ASUS TUF Gaming B550M-Plus WiFi II is a micro-ATX AMD AM4 motherboard featuring PCIe 4.0, dual M.2 with heatsinks, Wi-Fi 6, Realtek 2.5GbE, USB 3.2 Gen 2 Type-C, and Aura Sync RGB — built for Ryzen 5000 Series gaming builds
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Overview
The ASUS TUF Gaming B550M-Plus WiFi II is a micro-ATX motherboard built on the AMD B550 chipset, designed for AMD AM4 processors including Ryzen 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors. Measuring 24.4 cm x 24.4 cm, it fits standard micro-ATX cases while delivering a feature set typically associated with larger form factors. At the heart of its power delivery is an 8+2 DrMOS power stage configuration paired with ASUS DIGI+ VRM digital power design and a ProCool solid-pin ATX connector. These components work together to provide stable power for Ryzen 5000 processors under sustained workloads. Thermal management is handled by VRM heatsinks, a fanless PCH heatsink, and dedicated M.2 heatsinks across both storage slots, supported by Fan Xpert 2+ software for granular fan control across four fan headers. For connectivity, the board includes Wi-Fi 6 (802.11 a/b/g/n/ac/ax) with Bluetooth 5.2 via a 2x2 antenna configuration, along with a Realtek 2.5 Gigabit Ethernet port protected by ASUS TUF LANGuard surge protection. Two-Way AI Noise Cancellation software further enhances communication quality during gaming sessions or video conferences. Storage options cover two M.2 Key-M slots with heatsinks: M.2_1 supports PCIe 4.0 x4 and SATA modes (with Ryzen 5000/3000 non-G CPUs), and M.2_2 supports PCIe 3.0 x4 and SATA modes up to 22110 length. Four SATA 6 Gb/s ports add conventional drive support, with RAID 0, 1, and 10 configurations available. Rear I/O provides 8 USB ports: 1x USB 3.2 Gen 2 Type-A, 1x USB 3.2 Gen 2 Type-C, 4x USB 3.2 Gen 1 Type-A, and 2x USB 2.0 Type-A, alongside DisplayPort 1.2 (4K@60Hz) and HDMI 2.1 (4K@60Hz) outputs. The BIOS FlashBack button enables CPU-less firmware updates directly from a USB drive. Audio is powered by a Realtek 7.1 Surround Sound HD Audio CODEC supporting up to 24-bit/192 kHz playback, with audio shielding, dedicated PCB layers, premium capacitors, and an optical S/PDIF output for home theatre connectivity. Aura Sync RGB lighting is supported via two AURA RGB headers and one Addressable Gen 2 header. Verified Specifications: - Socket: AMD AM4 - Chipset: AMD B550 - Form Factor: microATX, 24.4 cm x 24.4 cm - Memory: 4x DIMM, DDR4, max 128 GB, up to DDR4-4866 (OC), Dual Channel - PCIe: 1x PCIe 4.0 x16 (CPU, Ryzen 5000/3000), 1x PCIe 3.0 x16 (x4 mode, chipset), 1x PCIe 3.0 x1 - Storage: 2x M.2 Key-M + 4x SATA 6 Gb/s, RAID 0/1/10 - Wireless: Wi-Fi 6 (802.11ax) 2x2 + Bluetooth 5.2 - Ethernet: Realtek 2.5 GbE - USB (rear): 2x Gen 2 (1x Type-A, 1x Type-C) + 4x Gen 1 + 2x USB 2.0 - Display: 1x DisplayPort 1.2, 1x HDMI 2.1 - Audio: Realtek 7.1 HD, optical S/PDIF out - BIOS: 256 Mb Flash ROM, UEFI AMI BIOS with FlashBack - Warranty: 3 Years
Datasheet
| Warranty | 3 Years |
|---|---|
| Chipset | AMD B550 Chipset |
| CPU Type | AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors |
| USB | Rear USB:Total 8 ports2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C®)4 x USB 3.2 Gen 1 ports (4 x Type-A)2 x USB 2.0 ports (2 x Type-A)Front USB:Total 6 ports1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports2 x USB 2.0 headers support additional 4 USB 2.0 ports |
| Bios | 256 Mb Flash ROM, UEFI AMI BIOS |
| Audio | Realtek 7.1 Surround Sound High Definition Audio CODECSupports: Jack-detection, Multi-streaming, Front Panel Jack-retaskingSupports up to 24-Bit/192 kHz playbackAudio FeaturesAudio ShieldingRear optical S/PDIF out portPremium audio capacitorsDedicated audio PCB layersAudio cover |
| 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 http://www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types |
| Storage | Supports 2 x M.2 slots and 4 x SATA 6Gb/s portsAMD Ryzen™ 5000 Series/ 3000 Series Desktop ProcessorsM.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes)AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop ProcessorsM.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)AMD B550 ChipsetM.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)4 x SATA 6Gb/s portsSupport RAID 0, 1, 10 |
| Ethernet | 1 x Realtek 2.5Gb EthernetTUF LANGuard |
| Graphics | 1 x DisplayPort**1 x HDMI®port**** Graphics specifications may vary between CPU types.** Supports max. 4K@60Hz as specified in DisplayPort 1.2.*** Supports 4K@60Hz as specified in HDMI 2.1 |
| Accessories | Cables2 x SATA 6Gb/s cablesMiscellaneous1 x ASUS Wi-Fi moving antennas1 x I/O Shield1 x M.2 Rubber package1 x M.2 SSD screw package1 x TUF Gaming stickerInstallation Media1 x Support DVDDocumentation1 x TUF Certification card1 x User guide |
| Manageability | WOL by PME, PXE |
| Expansion Slots | AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors1 x PCIe 4.0 x16 slot (supports x16 mode)*AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors1 x PCIe 3.0 x16 slot (supports x16 mode)*AMD B550 Chipset1 x PCIe 3.0 x16 slot (supports x4 mode)**1 x PCIe 3.0 x1 slot*** Support PCIe bifurcation for RAID on CPU function.** PCIEX16_2 will run x2 mode when PCIEX1 slot is used |
| Operating System | Windows® 11 readyWindows® 10 64-bit |
| Special Features | ASUS TUF PROTECTIONDIGI+ VRM (Digital power design with DrMOS)Enhanced DRAM Overcurrent ProtectionESD GuardsTUF LANGuardOvervoltage ProtectionSafeSlotStainless-Steel Back I/OASUS Q-DesignQ-DIMMQ-LED (CPU , DRAM , VGA , Boot Device )Q-SlotASUS Thermal SolutionM.2 heatsinkVRM heatsink designASUS EZ DIYBIOS FlashBack™ buttonBIOS FlashBack™ LEDProCoolAURA SyncAURA RGB headersAddressable Gen 2 header |
| Software Features | ASUS Exclusive SoftwareArmoury CrateAura CreatorAura SyncTwo-Way AI Noise CancelationAI Suite 3Performance And Power Saving UtilityTurboV EVOEPUDIGI+ VRMFan Xpert 2+EZ updateTUF GAMING CPU-ZAI ChargerDAEMON ToolsDTS Custom for GAMING HeadsetsNorton Anti-virus software (Free Trial version)WinRARUEFI BIOSASUS EZ DIYASUS CrashFree BIOS 3ASUS EZ Flash 3ASUS UEFI BIOS EZ Mode |
| Back Panel I/O Ports | 2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C®)4 x USB 3.2 Gen 1 ports (4 x Type-A, one port can be switched to USB BIOS FlashBack™)2 x USB 2.0 ports (2 x Type-A)1 x DisplayPort1 x HDMI® port1 x Wi-Fi Module1 x Realtek 2.5Gb Ethernet port5 x Audio jacks1 x Optical S/PDIF out port1 x BIOS FlashBack™ button1 x PS/2 Keyboard/Mouse combo port |
| Wireless & Bluetooth | 2×2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) + BT5.2 |
| Internal I/O Connectors | Fan and Cooling related1 x 4-pin CPU Fan header1 x 4-pin CPU OPT Fan header2 x 4-pin Chassis Fan headersPower related1 x 24-pin Main Power connector1 x 8-pin +12V Power connectorStorage related2 x M.2 slots (Key M)4 x SATA 6Gb/s portsUSB1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports2 x USB 2.0 headers support additional 4 USB 2.0 portsMiscellaneous1 x Addressable Gen 2 header2 x AURA RGB headers1 x Clear CMOS header1 x COM Port header1 x Front Panel Audio header (AAFP)1 x Speaker header1 x SPI TPM header (14-1pin)1 x 10-1 pin System Panel header |
| Form Factor | microATX24.4cm x 24.4cm |




