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Green Micro-ATX board, silver AM4 socket, two black DDR4 slots, four SATA ports, single M.2, HDMI and D-Sub video

ASUS

ASUS PRIME A520M-K AMD motherboard

SKU CH-R35H-5W1VB

Micro-ATX board for AM4 Ryzen CPUs with two DDR4 slots up to 64 GB, one PCIe 3.0 x16 slot, one M.2 Key M slot, four SATA ports and 1 Gb Ethernet

  • CPU TypeAMD Socket AM4 for 3rd Gen AMD Ryzen and 3rd Gen AMD Ryzen w
  • ChipsetAMD A520
  • Number of Memory Slots2x288pin (DDR4)
  • Memory StandardDDR4 4600(O.C.)/ 4400(O.C.)/ 4000(O.C.)/ 3866(O.C.)/ 3733(O.
  • Maximum Memory Supported64GB
  • Channel SupportedDual Channel
  • Supports 3rd Gen Ryzen and Ryzen with Radeon Graphics on AM4 socket
  • Dual-channel DDR4 up to 64 GB at speeds from 2133 to 4600 MHz
  • PCIe 3.0 x16 slot plus two x1 slots for expansion cards
  • M.2 Key M slot fits 2242, 2260 or 2280 drives in PCIe 3.0 x4 or SATA mode
  • Four SATA 6 Gb/s ports with RAID 0, 1, 10 plus Realtek ALC887 7.1 audio and RTL8111H 1 Gbps LAN

Socket AM4 DDR4 Micro-ATX Motherboard

The ASUS PRIME A520M-K is a Micro-ATX motherboard built around the AMD A520 chipset and Socket AM4. It supports 3rd Gen AMD Ryzen processors and 3rd Gen AMD Ryzen with Radeon Graphics processors. The board provides two 288-pin DDR4 slots with a maximum capacity of 64GB running in dual-channel mode.

Entry Builders and Office Systems

This board suits builders assembling a cost-effective desktop for everyday computing or office work using a Ryzen APU or CPU without overclocking. It offers four SATA 6Gb/s ports, one M.2 slot for 2242/2260/2280 drives, and a single PCIe 3.0 x16 slot for a graphics card. Users who need CPU overclocking, multiple GPU slots, or more than two memory slots should consider a different chipset.

M.2 Key M 2280 PCIe 3.0 x4

The single M.2 slot accepts Key M modules in 2242, 2260, and 2280 lengths and operates in either PCIe 3.0 x4 or SATA mode. This single specification determines whether your chosen solid-state drive will be compatible with the board.

Highlights

  • Supports 3rd Gen Ryzen and Ryzen with Radeon Graphics on AM4 socket
  • Dual-channel DDR4 up to 64 GB at speeds from 2133 to 4600 MHz
  • PCIe 3.0 x16 slot plus two x1 slots for expansion cards
  • M.2 Key M slot fits 2242, 2260 or 2280 drives in PCIe 3.0 x4 or SATA mode
  • Four SATA 6 Gb/s ports with RAID 0, 1, 10 plus Realtek ALC887 7.1 audio and RTL8111H 1 Gbps LAN

Specifications

BrandASUS
ModelPRIME A520M-K
CPU TypeAMD 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.
ChipsetAMD A520
Number of Memory Slots2x288pin (DDR4)
Memory StandardDDR4 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 Supported64GB
Channel SupportedDual Channel
PCI Express 3.0 x163rd Gen AMD Ryzen and 3rd Gen AMD Ryzen with Radeon Graphics Processors
1 x PCIe 3.0 x16 slot (supports x16 mode)
PCI Express x1AMD A520 Chipset
2 x PCIe 3.0 x1 slots
Serial ATA (SATA)4 x SATA 6Gb/s
M.23rd 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 RAID0/1/10
Audio ChipsetRealtek ALC887
Audio Channels7.1 Channels
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
LAN ChipsetRealtek RTL8111H
Max LAN Speed1Gbps
Back I/O Ports4 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
Onboard USB1 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 ConnectorsFan 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
Form FactorMicro ATX
LED LightingNone RGB
Dimensions (W x L)8.9" x 8.7"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
Windows 11Supported
FeaturesSpecial 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:
Package ContentsAccessories:
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

Questions about this item

Which DDR4 modules and maximum capacity do I need for the PRIME A520M-K?

Install up to 64 GB using two 288-pin DDR4 DIMMs; the board runs at 2133–3200 MHz natively and up to 4600 MHz when overclocked in dual-channel mode.

Can I keep my existing PCIe 3.0 add-in cards with this A520 board?

Yes — one full-length PCIe 3.0 x16 slot and two PCIe 3.0 x1 slots accept current graphics, sound or networking cards without bandwidth loss.

How do I verify the M.2 drive is running at PCIe 3.0 x4 speed after installation?

Enter the UEFI and confirm the M.2 slot shows a PCIe 3.0 x4 link, or check the negotiated speed in the OS device manager or benchmark tool.

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