Brand
ASUS
Model
PRIME A520M-K
Supported CPU
CPU Socket Type 
AM4
CPU Type
AMD Socket AM4 for 3rd Gen AMD Ryzen and 3rd Gen AMD Ryzen with Radeon Graphics Processors*
* Refer to www.asus.com for CPU support list.
Chipsets
Chipset 
AMD A520
Memory
Number of Memory Slots
2×288pin
Memory Standard
DDR4 4600(O.C.)/ 4400(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.C.)/ 3600(O.C.)/ 3466(O.C.)/ 3333(O.C.)/ 3200/ 3000/ 2800/ 2666/ 2400/ 2133 MHz, Un-buffered Memory*
* ECC memory (ECC mode) support varies by CPU.
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Maximum Memory Supported
64GB
Channel Supported 
Dual Channel
Expansion Slots
PCI Express 3.0 x16 
3rd Gen AMD Ryzen and 3rd Gen AMD Ryzen with Radeon Graphics Processors
1 x PCIe 3.0 x16 slot (supports x16 mode)
PCI Express x1
AMD A520 Chipset
2 x PCIe 3.0 x1 slots
Storage Devices
SATA 6Gb/s 
4 x SATA 6Gb/s
M.2
3rd Gen AMD Ryzen and 3rd Gen AMD Ryzen with Radeon Graphics Processors
M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)
SATA RAID
0/1/10
Onboard Audio
Audio Chipset 
Realtek ALC887
Audio Channels 
7.1 Channels
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Onboard LAN
LAN Chipset
Realtek RTL8111H
Max LAN Speed
10/100/1000Mbps
Rear Panel Ports
Back I/O Ports
4 x USB 3.2 Gen 1 ports (4 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x D-Sub port
1 x HDMI port
1 x Realtek RTL8111H 1Gb Ethernet port
3 x Audio jacks
1 x PS/2 Keyboard/Mouse combo port
Internal I/O Connectors
Onboard USB
1 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 Connectors
Fan and cooling related
1 x 4-pin CPU Fan header
1 x 4-pin Chassis Fan header
Miscellaneous
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x S/PDIF Out header
1 x Speaker header
1 x SPI TPM header (14-1pin)
1 x 10-1 pin System Panel header
Physical Spec
Form Factor
Micro ATX
LED Lighting
None RGB
Dimensions (W x L)
8.9" x 8.7"
Power Pin
1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11 Compatibility
Windows 11
Supported
Features
Features
Special Features:
ASUS 5X PROTECTION III
- ASUS DIGI+ VRM
- ASUS LANGuard
- ASUS Overvoltage Protection
- ASUS SafeSlot Core
- ASUS Stainless-Steel Back I/O
ASUS Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design

Software Features:
ASUS Exclusive Software
Armoury Crate
AI Suite 3
- Performance and Power Saving Utility
TurboV EVO
EPU
Digi+ VRM
Fan Xpert
- EZ update
ASUS CPU-Z
AI Charger
DAEMON Tools
Norton Anti-virus software (Free Trial for 60 days)
WinRAR
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode

BIOS:
256MB Flash ROM, UEFI AMI BIOS

Manageability:
WOL by PME, PXE

Operating System:
Windows 10 - 64-bit
Packaging
Package Contents
Accessories:
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x I/O Shield
1 x M.2 SSD screw package
Installation Media
1 x Support DVD
Documentation
1 x User manual