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Micro-ATX motherboard with CPU, dark heatsinks and WiFi antenna

ASUS

ASUS TUF GAMING B550M-PLUS WIFI II AMD motherboard and Ryzen 7 5800X3D processor

SKU CH-CHG1-7AH73

Micro-ATX B550 board with WiFi 6 and 2.5 Gb LAN paired with an 8-core Ryzen 7 5800X3D at 3.4 GHz, 105 W TDP, supporting DDR4 up to 4866 MT/s and PCIe 4.0 x4 M.2

  • CPU Socket TypeAM4
  • ChipsetAMD B550
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4866(OC) / 4800(OC) / 4600(OC) / 4466(OC) / 4400(OC) /
  • Maximum Memory Supported128GB
  • Channel SupportedDual Channel
  • 8-core 3.4 GHz Ryzen 7 5800X3D processor for high frame rates
  • 128 GB DDR4 across four 288-pin slots for large memory capacity
  • PCIe 4.0 x4 M.2 slot and four SATA 6 Gb/s ports for fast storage options
  • WiFi 6 and 2.5 Gb LAN for low-latency networking
  • 1-channel Realtek audio with HDMI 2.1 and DisplayPort 1.2 video outputs

Socket AM4 pairing for gaming builds

This bundle pairs an ASUS TUF GAMING B550M-PLUS WIFI II motherboard with an AMD Ryzen 7 5800X3D processor. The board uses the AMD B550 chipset and a Micro ATX layout. The CPU delivers eight cores at a base clock of 3.4 GHz with a 105 W TDP. Together they target gamers who want high frame rates on a compact platform.

Verify cooler clearance and memory speed targets

Confirm your CPU cooler fits the Micro ATX board layout around the 8+2 DrMOS power stages. The board provides four 288-pin DDR4 slots supporting speeds up to 4866 MT/s when overclocked, with a maximum capacity of 128 GB in dual-channel mode. Ensure your kit matches the validated frequencies listed in the QVL. Check that your power supply includes the required 8-pin EPS connector for the CPU.

VRM heatsink handles sustained loads without a fan

The fanless VRM and PCH heatsink arrangement relies on case airflow to dissipate heat during extended sessions. Multiple hybrid fan headers and Fan Xpert 4 allow curve tuning so chassis fans respond to VRM temperatures. The 2.5 Gb LAN and WiFi 6 controllers maintain stable throughput during long downloads or streaming. Dual M.2 slots — one with PCIe 4.0 x4 — keep storage speeds consistent under heavy I/O.

Highlights

  • 8-core 3.4 GHz Ryzen 7 5800X3D processor for high frame rates
  • 128 GB DDR4 across four 288-pin slots for large memory capacity
  • PCIe 4.0 x4 M.2 slot and four SATA 6 Gb/s ports for fast storage options
  • WiFi 6 and 2.5 Gb LAN for low-latency networking
  • 1-channel Realtek audio with HDMI 2.1 and DisplayPort 1.2 video outputs

Specifications

BrandASUS
ModelTUF GAMING B550M-PLUS WIFI II
Part Number90MB19Y0-MVAAY0
CPU Socket TypeAM4
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
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*
* Running at x4 mode
PCI Express x11 x PCIe 3.0 x1*
* PCIEX16_2 will run x2 mode when PCIEX1 is used.
Serial ATA (SATA)4 x SATA 6Gb/s
M.2AMD Ryzen 5000 Series/ 3000 Series Desktop Processors
M.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 Processors
M.2_1 slot (Key M), type 2242/2260/2280 (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)
SATA RAID0/1/10
Onboard Video ChipsetSupported only by CPU with integrated graphic
Audio ChipsetRealtek 7.1 Surround Sound High Definition Audio CODEC
Audio Channels7.1 Channels
LAN ChipsetRealtek 2.5Gb Ethernet
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 6
802.11 a/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, one port can be switched to USB BIOS FlashBack)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x 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
1 x PS/2 Keyboard/Mouse combo port
Onboard USB1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
2 x USB 2.0 headers support additional 4 USB 2.0 ports
Other ConnectorsFan and Cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
2 x 4-pin Chassis Fan headers
Miscellaneous
1 x Addressable Gen 2 header
2 x AURA RGB headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x Speaker header
1 x SPI TPM header (14-1pin)
1 x 10-1 pin System Panel header
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" 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
- DIGI+ VRM (Digital power design with DrMOS)
- Enhanced DRAM Overcurrent Protection
- ESD Guards
- TUF LANGuard
- Overvoltage Protection
- SafeSlot
- Stainless-Steel Back I/O
ASUS Q-Design
- Q-DIMM
- Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
- Q-Slot
ASUS Thermal Solution
- M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- ProCool
AURA Sync
- AURA RGB headers
- Addressable Gen 2 header
Software Features:
ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
-
Package ContentsAccessories:
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x M.2 Rubber package
1 x M.2 SSD screw package
1 x TUF Gaming sticker
Installation Media
1 x Support DVD
Documentation
1 x TUF Certification card
1 x User guide

Questions about this item

Does the bundle include RAM or an M.2 NVMe drive, or must I buy them separately?

The bundle supplies the motherboard and the Ryzen 7 5800X3D processor only. You must add DDR4 memory and an M.2 NVMe SSD yourself.

The board lists two M.2 slots but only one supports PCIe 4.0 x4 — which slot is that and what length drives does it accept?

M.2_1 is the PCIe 4.0 x4 slot and accepts 2242, 2260 and 2280 length drives.

The CPU is rated at 3.4 GHz base and 105 W TDP — what does that mean for everyday gaming performance?

The 3.4 GHz base clock and 105 W rating indicate strong sustained speeds under load, and the large 3D V-Cache helps keep frame rates high in cache-sensitive titles.

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