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ATX motherboard in dark grey with black heatsinks and yellow accents

ASUS

ASUS TUF GAMING B550-PLUS WIFI II AMD motherboard

SKU CH-H2B3-SM7FP MPN TUF GAMING B550-PLUS WIFI II

An ATX board for AMD AM4 processors with PCIe 4.0, DDR4 up to 4866 MT/s, WiFi 6, 2.5 Gb LAN and dual M.2 slots

  • CPU Socket TypeAM4
  • CPU TypeSupports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Seri
  • ChipsetAMD B550
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
  • Maximum Memory Supported128GB

Option TUF GAMING B550-PLUS WIFI II

  • Supports AMD Ryzen 5000, 4000 and 3000 series CPUs on AM4 socket
  • 8+2 DrMOS power stages deliver stable power for high-core-count processors
  • WiFi 6 and 2.5 Gb LAN provide fast, reliable network connectivity
  • Dual M.2 slots with one PCIe 4.0 x4 for high-speed NVMe storage
  • SupremeFX S1220A codec with DTS audio and AI noise-cancelling microphone technology

AM4 Platform Foundation

The ASUS TUF GAMING B550-PLUS WIFI II motherboard targets builders who need a stable AM4 platform for AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series processors. It provides four DDR4 slots supporting up to 128 GB in dual-channel mode with Intel XMP 2.0 profiles. A single PCI Express 4.0 x16 slot, one PCI Express 3.0 x16 slot running at x4 and three PCIe 3.0 x1 slots handle expansion, while six SATA 6 Gb/s ports and two M.2 sockets cover storage needs.

Sustained Load Behaviour

An 8+2 DrMOS power stage design with alloy chokes and durable capacitors delivers steady current to high-core-count CPUs during extended workloads. Fanless VRM and PCH heatsinks dissipate heat without adding noise, while multiple hybrid fan headers and Fan Xpert 4 or UEFI Q-Fan Control let the system adjust airflow as temperatures rise. This arrangement keeps power delivery consistent when the processor runs at full load for long periods.

Build Quality And Connectivity

The board integrates WiFi 6 (802.11ax) and 2.5 Gb LAN with LANGuard for reliable wired and wireless networking. Rear I/O includes HDMI 2.1 and DisplayPort 1.2 for integrated graphics, USB 3.2 Gen 2 Type-C and Type-A ports, and a front-panel USB 3.2 Gen 1 header. Audio uses a SupremeFX S1220A codec with DTS support for 7.1 channel output, and a TPM header is provided for platform security.

Highlights

  • Supports AMD Ryzen 5000, 4000 and 3000 series CPUs on AM4 socket
  • 8+2 DrMOS power stages deliver stable power for high-core-count processors
  • WiFi 6 and 2.5 Gb LAN provide fast, reliable network connectivity
  • Dual M.2 slots with one PCIe 4.0 x4 for high-speed NVMe storage
  • SupremeFX S1220A codec with DTS audio and AI noise-cancelling microphone technology

Specifications

BrandASUS
ModelTUF GAMING B550-PLUS WIFI II
CPU Socket TypeAM4
CPU TypeSupports AMD Ryzen 5000 Series / 5000 G-Series / 4000 G-Series / 3000 Series Processors *
* Refer to www.asus.com for CPU support list.
ChipsetAMD B550
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 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*
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.
Maximum Memory Supported128GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 2.0
ECC SupportedECC Memory (ECC mode) support varies by CPU.
Buffer SupportedUn-buffered
PCI Express 4.0 x161 x PCI Express 4.0 x16*
* Actual support may vary by CPU..
PCI Express 3.0 x161 x PCI Express 3.0 x16*
* Supports x4 mode.
PCI Express x13 x PCIe 3.0 x1 *
* PCIE 3.0 X16_2 runs x1 mode when any of the PCIe 3.0 x1 slots is occupied.
Serial ATA (SATA)6 x SATA 6Gb/s
M.2AMD Ryzen 5000 Series / 3000 Series Desktop Processors:
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes)
AMD Ryzen 5000 G-Series / 4000 G-Series Desktop Processors:
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)
AMD B550 Chipset:
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 & SATA modes)*
* M2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.
SATA RAID0/1/10
Onboard Video ChipsetSupported only by CPU with integrated graphic
Audio Channels7.1 Channels
LAN ChipsetRealtek 2.5Gb Ethernet
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 6
802.11a/b/g/n/ac/ax
BluetoothBluetooth 5.2
Back I/O 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)
1 x DisplayPort
1 x HDMI port
1 x ASUS Wi-Fi Module
1 x Realtek 2.5Gb Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
Onboard USB1 x USB 3.2 Gen 1 header(s) support(s) additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 header(s) support(s) additional 4 USB 2.0 ports
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header(s)
1 x 4-pin CPU OPT Fan header(s)
1 x 4-pin AIO Pump header(s)
3 x 4-pin Chassis Fan header(s)
Miscellaneous
2 x AURA Addressable Gen 2 header(s)
2 x AURA RGB header(s)
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x SPI TPM header (14-1pin)
1 x 20-3 pin System Panel header
1 x Thermal Sensor header
1 x Thunderbolt header
Form FactorATX
LED LightingRGB
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11Ready
FeaturesSpecial Features:
ASUS TUF PROTECTION
- ASUS DIGI+ VRM (Digital power design with Dr. MOS)
- ASUS Enhanced DRAM Overcurrent Protection
- ASUS ESD Guards
- TUF LANGuard
- ASUS Overvoltage Protection
- ASUS SafeSlot
- ASUS Stainless-Steel Back I/O
ASUS Q-Design
- ASUS Q-DIMM
- ASUS Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- ASUS Q-Slot
ASUS Thermal Solution
- Aluminum M.2 heatsink
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- Procool
AURA Sync
- AURA RGB header(s)
- Addressable Gen 2 RGB header(s)
Software Features:
ASUS Exclusive Software
Package ContentsAccessories:
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x I/O Shield
1 x M.2 Rubber Package(s)
1 x M.2 SSD screw package(s)
1 x TUF Gaming sticker
1 x ASUS 2x2 dual-band Wi-Fi moving antennas
Installation Media
1 x Support DVD
Documentation
1 x TUF Certification card
1 x User manual
Shipping weight1.61 kg
Package size338 × 272 × 69 mm

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Questions about this item

How quiet does the board stay with the fanless VRM and PCH heatsink when the system runs all day?

The board uses a fanless VRM and PCH heatsink, so no chipset fan noise is added. Multiple hybrid fan headers and Fan Xpert 4 or UEFI Q-Fan Control let you tune case-fan curves for low noise under sustained load.

Which DDR4 memory kit and AM4 processor must I already have to use the four 288-pin slots up to 128 GB?

You need an AMD Ryzen 5000 Series, 5000 G-Series, 4000 G-Series or 3000 Series CPU and un-buffered DDR4 DIMMs; the board runs dual-channel up to 128 GB with speeds from 2133 to 4866(OC) depending on the processor installed.

Will my existing PCIe 3.0 graphics card and SATA SSDs work in the PCIe 3.0 x16 slot and the six SATA 6Gb/s ports?

Yes. The second x16 slot is electrically PCIe 3.0 x4 and the six SATA 6Gb/s ports are native to the B550 chipset, so older GPUs and SATA drives connect without adapters.

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