Model
PRIME A520M-A II/CSM
CPU
AMD Ryzen. 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series
Desktop Processors
*Refer to www.asus.com for CPU support list.
Chipset
A520
Memory
4800(OC)/4600(OC)/4466(OC)/4400(OC)/4266(OC)/4133(OC)/4000(OC)/3866(OC)/
3733(OC)/3600(OC)/3466(OC)/3333(OC)/3200/3000/2800/2666/2400/2133 MHz,
Un-buffered Memory*

Dual Channel Memory Architecture

*ECC Memory (ECC mode) support varies by CPU.

* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists),
and memory frequency support depends on the CPU types.

Graphics
* Graphics specifications may vary between CPU types
Expansion Slots
AMD Ryzen. 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series
Desktop Processors
1 x PCIe 3.0 x16 slot (supports x16 mode)

AMD A520 Chipset

2 x PCIe 3.0 x1 slots

Storage
Supports 1 x M.2 slot and 4 x SATA 6Gb/s ports
AMD Ryzen. 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series
Desktop Processors
M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 e SATA
modes)

AMD A520 Chipset

4 x SATA 6Gb/s ports

Support Raid 0, 1, 10

Ethernet
1 x Realtek 1Gb Ethernet
USB
Rear USB:Total 6 ports
4 x USB 3.2 Gen 1 ports (4 x Type-A)

2 x USB 2.0 ports (2 x Type-A)

Front USB:Total 6 ports
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

Audio
Realtek ALC887/897 7.1 Surround Sound High Definition Audio CODEC*
- Supports : Jack detection, Multi-streaming, Front Panel
Jack-retasking

- Supports up to 24-Bit/192 kHz playback"

Audio Features

- Audio Shielding

- Premium Japanese audio capacitors

- Dedicated audio PCB layers

*A chassis with an HD audio module in the front panel is required to
support 7.1 Surround Sound audio output.

Back Panel 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 DisplayPort

1 x HDMITM port

1 x D-Sub

1 x Realtek 1Gb Ethernet port

3 x Audio jacks

1 x PS/2 Keyboard/Mouse combo port

Internal I/O Connectors
Fan and cooling related

1 x 4-pin CPU Fan header

2 x 4-pin Chassis Fan headers

Power related

1 x 24-pin Main Power connector

1 x 8-pin +12V Power connector

Storage related

1 x M.2 slot (Key M)

4 x SATA 6Gb/s ports

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

Miscellaneous

2 x AURA Addressable Gen 2 header

2 x AURA RGB headers

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