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Green Micro ATX board with silver AM4 socket and four black DDR4 slots

ASUS

ASUS PRIME A520M-K Socket AM4 DDR4 64GB AMD motherboard

SKU CH-H5HT-7MK70

Micro-ATX AMD A520 board with AM4 socket, DDR4 memory up to 64GB, six SATA and USB 3.2 Gen 1 ports, Realtek audio and LAN

  • ProcessorAMD AM4 slot for AMD Ryzen 5000 series/5000G series/4000G se
  • ChipsetAMD A520
  • CPU socketAM4
  • Supported memoryDDR4 4600 (Overclocking)/4400 (Overclocking)/4000 (Overclock
  • Max supported RAM64 GB
  • PCI slotsAMD Ryzen 5000 Series/5000 G Series/4000 G Series/3000 Serie
  • Socket AM4 fits Ryzen 5000, 4000G and 3000 series CPUs
  • DDR4 memory up to 4600 MHz overclocked with 64 GB maximum capacity
  • Micro-ATX board measures 22.6 by 22.1 cm for compact builds
  • Realtek ALC887 audio and RTL8111H LAN provide core connectivity
  • Rear panel includes four USB 3.2 Gen 1 Type-A and two USB 2.0 Type-A ports

AM4 socket with A520 chipset

This ASUS PRIME A520M-K motherboard fits AMD Ryzen 5000 series, 5000G series, 4000G series and 3000G series desktop processors. The Micro ATX board measures 22.6 by 22.1 centimetres and supports DDR4 memory up to 64GB across two slots. It provides one PCIe 3.0 x16 slot and two PCIe 3.0 x1 slots for expansion cards.

Entry builds and basic upgrades

The board suits budget office PCs, home servers or simple gaming rigs that do not need overclocking or multi-GPU setups. Builders who want CPU overclocking, PCIe 4.0 lanes or more than one M.2 drive should choose a different chipset. The Realtek ALC887 audio and RTL8111H LAN cover everyday sound and wired networking needs.

Two DDR4 slots capped at 64GB

Maximum memory capacity is 64GB using two DDR4 DIMM slots with supported speeds from 2133 up to 4600 MHz when overclocked. If your build requires four memory slots or more than 64GB total RAM this board will not fit the requirement.

How it compares

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

Price $77.99
Cheaper than about 83% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Product lineASUS PRIME A520M-K
Model nameASUS PRIME A520M-K
Processor
ProcessorAMD AM4 slot for AMD Ryzen 5000 series/5000G series/4000G series/3000G series desktop processors *
CPU socketAM4
ChipsetAMD A520
Memory
Supported memoryDDR4 4600 (Overclocking)/4400 (Overclocking)/4000 (Overclocking)/3866 (Overclocking)/3733 (Overclocking)/3600 (Overclocking)/3466 (Overclocking)/3333 (Overclocking)/3200/3000/2800/2666/2400/2133 MHz Memory
Max supported RAM64 GB
Storage
SATA and RAID support1XM.2 interface, 4xSATA III interface
Audio & video
Audio chipRealtek ALC887
Connectivity
Ethernet controllerRealtek RTL8111H
Ports & slots
PCI slotsAMD Ryzen 5000 Series/5000 G Series/4000 G Series/3000 Series/3000 G Series Desktop Processors
1 x PCIe 3.0 x16 (x16 mode)
AMD A520 chipset
2 x PCIe 3.0 x1

Questions about this item

What case clearance does the 22.6 by 22.1 cm Micro ATX board need?

The board fits any chassis that accepts a 22.6 by 22.1 cm Micro ATX footprint and has matching standoff holes.

Which headers must be connected during installation and which step is often missed?

Connect the 24 pin ATX power, 4 pin CPU power, front panel switches, front USB 3.2 Gen 1 and USB 2.0 headers, SATA cables and the I/O shield; the front panel header pinout is the step most often wired incorrectly.

What maintenance will the onboard battery require and how is it accessed?

The onboard battery maintains BIOS settings; when the system loses time or settings after power off, power down, unplug, remove the old cell from its holder and fit a new one of the same type.

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