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Green Micro-ATX motherboard with black heatsinks and Wi-Fi antenna connectors

ASUS

ASUS TUF GAMING B550M-ZAKU (WI-FI) AMD motherboard

SKU CH-TJ50-MR66H

Micro-ATX AMD B550 board with Socket AM4, DDR4 up to 128 GB and built-in Wi-Fi

  • CPU socketSocket AM4
  • ChipsetAMD B550
  • Max supported RAM128 GB
  • Supports up to 128GB DDR4 memory for heavy multitasking
  • AMD B550 chipset enables PCIe 4.0 ready performance on Socket AM4
  • Micro ATX form factor fits compact gaming builds
  • Integrated Wi-Fi module includes antenna for wireless connectivity
  • TUF Gaming durability components tested for 100% reliability

Compact AM4 platform

The ASUS TUF GAMING B550M-ZAKU (WI-FI) is a Micro ATX motherboard built on the AMD B550 chipset for Socket AM4 CPUs. It supports up to 128GB of DDR4 memory and includes integrated Wi-Fi with an antenna in the box. The board ships with a CMOS battery, one SATA cable and an I/O shield.

Micro ATX form factor

This board suits builders who need a smaller footprint than standard ATX while keeping four memory slots for high-capacity DDR4 kits. Users planning multi-GPU arrays or extensive PCIe expansion should consider a full-size ATX alternative instead.

128GB DDR4 limit

The maximum supported memory is 128GB across four DDR4 slots, which determines the ceiling for workstation or gaming workloads. Verify your CPU and memory kit specifications against this limit before purchasing.

How it compares

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

Price $142.99
Cheaper than about 64% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineASUS TUF GAMING B550M-ZAKU (WI-FI)
Model nameASUS TUF GAMING B550M-ZAKU (WI-FI)
Processor
CPU socketSocket AM4
ChipsetAMD B550
Memory
Max supported RAM128 GB

Questions about this item

How do I confirm the board is working after I install it?

Power on the system and watch for the POST screen or BIOS splash; the CPU fan should spin and the debug LEDs should clear.

What comes in the box and what must I source separately?

The package includes the motherboard, one CMOS battery, one SATA cable, one chassis I/O back panel and the Wi-Fi antenna; CPU, memory, storage, cooler and power supply are not included.

Which memory capacity should I choose for this board?

The board supports up to 128GB of DDR4, so pick a kit that fits your workload and stays within that limit.

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