ASUS · Motherboard

ASUS PRIME A520M-K/CSM

A520 · AM4 · mATX · DDR4

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Chipset A520
Form factor mATX
Memory slots 2
Max memory 64 GB
Socket AM4
Memory type DDR4

ASUS PRIME A520M-K/CSM is a mATX and A520 chipset motherboard for AM4 processors and DDR4 memory. It came out in 2025.

Released: 2025-09-25
Socket: AM4

Specifications

Key specs

Chipset: A520
Form factor: mATX
Memory slots: 2
Max memory: 64 GB
Socket: AM4
Memory type: DDR4
Released: 2025-09-25
Part number: PRIME A520M-K/CSM

Processor

Processor manufacturer: AMD
Processor socket: Socket AM4
Compatible processor series: AMD Ryzen 5000 Series, AMD Ryzen 4000 Series, AMD Ryzen 3000 Series
Supported processor sockets: Socket AM4

Memory

Supported memory types: DDR4-SDRAM
Number of memory slots: 2
Memory slots type: DIMM
Memory channels: Dual-channel
ECC сompatibility: ECC
Supported memory clock speeds: 2133,2400,2666,2800,2933,3000,3200,3333,3400,3466,3600,3733,3866,4000,4133,4200,4266,4333,4400,4466,4600,4866,5100,4666 MHz
Maximum internal memory: 64 GB
Unbuffered memory: Yes

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Storage controllers

Supported storage drive types: HDD & SSD
Supported storage drive interfaces: M.2, SATA III
Number of HDDs supported: 4
Number of storage drives supported: 5
RAID support: Yes
RAID levels: 0, 1, 10

Graphics

Parallel processing technology support: Not supported

Internal I/O

USB 2.0 connectors: 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors: 1
Number of SATA III connectors: 4
S/PDIF out connector: Yes
Front panel audio connector: Yes
ATX Power connector (24-pin): Yes
Number of EATX power connectors: 2
CPU fan connector: Yes
Number of chassis fan connectors: 1
Number of COM connectors: 1
TPM connector: Yes
12V power connector: Yes

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
Ethernet LAN (RJ-45) ports: 1
PS/2 ports quantity: 1
VGA (D-Sub) ports quantity: 1
HDMI ports quantity: 1
HDMI version: 2.1
Microphone in: Yes
USB connector type: USB Type-A

Network

Ethernet LAN: Yes
Ethernet interface type: Gigabit Ethernet
LAN controller: Realtek RTL8111H

Features

Motherboard chipset: AMD A520
Audio output channels: 7.1 channels
Component for: PC
Motherboard form factor: micro ATX
Motherboard chipset family: AMD
Windows operating systems supported: Windows 10 x64

Expansion slots

PCI Express x1 (Gen 3.x) slots: 2
PCI Express x16 (Gen 3.x) slots: 1
Number of M.2 (M) slots: 1

BIOS

BIOS type: UEFI AMI
BIOS memory size: 256 Mbit
Clear CMOS jumper: Yes

Weight & dimensions

Width: 226 mm
Depth: 221 mm

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Compatible processors

AM4 socket

AMD Ryzen 5 56006 cores · 12 threads
AMD Ryzen 5 55006 cores · 12 threads
AMD Ryzen 5 5600G6 cores · 12 threads
AMD Ryzen 7 5700X8 cores · 16 threads
AMD Ryzen 5 5600X6 cores · 12 threads
AMD Ryzen 5 5500F6 cores · 12 threads
AMD Ryzen 5 5600F6 cores · 12 threads
AMD Ryzen 5 5600T6 cores · 12 threads

Compatible memory

DDR4

Kingston FURY Beast 8GB (1x8) DDR4-3200 CL168 GB (1x8) · DDR4
Kingston FURY Beast 16GB (2x8) DDR4-3200 CL1616 GB (2x8) · DDR4
Kingston 32GB 3200MT/s DDR4 CL16 DIMM (Kit of 2) 1Gx8 FURY Beast RGB32 GB (2x16) · DDR4
VeloxStor 7004-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7005-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
VeloxStor 7006-DDR, 32 GB, 1 x 32 GB, DDR4, 3200 MT/s, 288-pin DIMM32 GB (1x32) · DDR4
VeloxStor 7007-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7008-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4

About this product

AMD A520 (Ryzen AM4) micro ATX motherboard with M.2 support, 1 Gb Ethernet, HDMI/D-Sub, SATA 6 Gbps, USB 3.2 Gen 1 Type-A Prime ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime A520 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.

User manual (PDF)

PRIME A520M-K/CSM vs similar motherboards

	ASUS PRIME A520M-K/CSM	ASUS PRIME A520M-K ARGB	ASUS PRIME A520M-E/CSM	Gigabyte A520M K V2 (Rev. 1.1)
Chipset	A520	A520	A520	A520
Form factor	mATX	mATX	mATX	mATX
Memory slots	2	2	2	2
Max memory	64 GB	64 GB	64 GB	64 GB
Socket	AM4	AM4	AM4	AM4
Memory type	DDR4	DDR4	DDR4	DDR4
Released	2025	2026	2023	2026