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Micro ATX motherboard dark PCB with grey heatsinks and reinforced slots

ASUS

ASUS TUF GAMING B550M-PLUS CFHD AMD motherboard

SKU CH-WW4X-84JST

Socket AM4 micro-ATX board with AMD B550 chipset supporting 128 GB DDR4

  • CPU socketSocket AM4
  • ChipsetAMD B550
  • Max supported RAM128 GB
  • Socket AM4 fits compatible AMD CPUs
  • AMD B550 chipset provides modern platform features
  • DDR4 memory support up to 128GB capacity
  • Micro ATX form factor suits compact builds
  • Includes CMOS battery, SATA cable and I/O shield

Micro ATX AM4 motherboard

The ASUS TUF GAMING B550M-PLUS CFHD is a Micro ATX board built for Socket AM4 processors on the AMD B550 chipset. It targets builders who need a compact platform for gaming or productivity without a full-size chassis. The board ships with a CMOS battery, one SATA cable and an I/O back panel.

DDR4 memory up to 128GB

Four DDR4 slots support a maximum of 128GB of system memory, giving ample headroom for multitasking and content creation. Populating all four slots reaches the rated limit, so larger kits are not supported. The B550 chipset provides the memory controller interface for these modules.

SATA storage and essential I/O

SATA connectors handle 2.5-inch or 3.5-inch drives for bulk storage and backups. The rear I/O panel covers core peripherals while the bundled antenna supports the onboard wireless module when present. Micro ATX mounting points fit standard cases with the corresponding standoff pattern.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $129.99
Cheaper than about 67% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineASUS TUF GAMING B550M-PLUS CFHD
Model nameASUS TUF GAMING B550M-PLUS CFHD
Processor
CPU socketSocket AM4
ChipsetAMD B550
Memory
Max supported RAM128 GB

Questions about this item

Will my existing DDR4 memory kit run at its rated speed on this B550 board?

The board supports DDR4 up to 128 GB total capacity. Memory speed depends on the specific CPU and module combination installed.

How can I confirm the motherboard is functioning after installation?

Power on the system and check for a successful POST screen. Verify the BIOS detects the CPU, all installed memory, and connected SATA drives.

Which accessories are included and what must I source separately?

The package includes the motherboard, one CMOS battery, one SATA cable, one I/O back panel, and the WiFi antenna if the board has a built-in module. No other accessories are included.

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