PRIME A520M-A II/CSM, Pro B550M-C/CSM Product different Compare｜Business

Find your perfect match

Compare up to 4 products

Compare details

Download pdf

Copy link

CPU

*Refer to www.asus.com for CPU support list.

AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors *,* Refer to www.asus.com for CPU support list

Manageability

WOL by PME, PXE

WOL by PXE

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 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.

Realtek ALC887/8977.1 Surround Sound High Definition Audio CODEC *,- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback,* Choose the chassis with HD audio module in front panel to support 8-channel audio output.

Chipset

AMD B550

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.

4 x DIMM, Max. 128GB, DDR4 4866(O.C)/4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4333(O.C.)/4266(O.C.)/4200(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *,* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.,Dual Channel Memory Architecture,ECC Memory (ECC mode) support varies by CPU.

Special Features

ASUS 5X PROTECTION III

- DIGI+ VRM

- LANGuard

- Overvoltage Protection

- SafeSlot Core

- Stainless-Steel Back I/O

ASUS Q-Design

- ASUS Q-DIMM

- ASUS Q-Slot

ASUS Thermal Solution

- VRM heatsink design

AURA Sync

- AURA RGB headers

- Addressable Gen 2 RGB headers

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 HDMI™ port

1 x D-Sub

1 x Realtek 1Gb Ethernet port

3 x Audio jacks

1 x PS/2 Keyboard/Mouse combo port

Graphic

1 x HDMI 2.1(4K@60HZ),*Graphics specifications may vary between CPU types.

Expansion Slots

AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series Desktop Processors

1 x PCIe 3.0 x16 slot (supports x16 mode)

AMD A520 Chipset

2 x PCIe 3.0 x1 slots

AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors,1 x PCIe 4.0 x16 (x16 mode) *,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors,* Support PCIe bifurcation for RAID on CPU function.,AMD B550 Chipset,1 x PCIe 3.0 x4 *¹,1 x PCIe 3.0 x16 (x16 mode),1 x PCI

Software Features

ASUS Exclusive Software

Armoury Crate

- Aura Creator

- Aura Sync

AI Suite 3

- Performance And Power Saving Utility

TurboV EVO

EPU

Digi+ VRM

Fan Xpert 2+

- EZ update

ASUS CPU-Z

AI Charger

DAEMON Tools

Norton Anti-virus software (Free Trial version)

WinRAR

UEFI BIOS

ASUS EZ DIY

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3

- ASUS UEFI BIOS EZ Mode

ASUS Exclusive Software
IT Management software supported
- ASUS Control Center Express(ACCE)

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

3 x M.2 SSD screw package(s),2 x M.2 SSD Hex screw packages,1 x ACC Express Activation Key Card,2 x SATA 6Gb/s cable(s),User manual,I/O Shield,2 x SATA 6Gb/s cable(s),1 x Supporting DVD

Storage

AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series Desktop Processors

M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)

AMD A520 Chipset

4 x SATA 6Gb/s ports

Support Raid 0, 1, 10

AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors : ,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors : ,Total supports 2 x M.2 slot(s) and 4 x SATA 6Gb/s ports,1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support,AMD B550 Chipset : ,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support,4 x SATA 6Gb/s port(s),,Support Raid 0, 1, 10

LAN

Realtek RTL8111H 1Gb Ethernet

Graphics

1 x DisplayPort 1.2
1 x HDMI™ 2.1(4K@60Hz)
1 x D-Sub
* Graphics specifications may vary between CPU types

USB Ports

Rear USB Port ( Total 6 ),2 x USB 3.2 Gen 1 port(s)(2 x Type-A),Front USB Port ( Total 7 ),4 x USB 3.2 Gen 1 port(s)(4 x Type-A),2 x USB 2.0 port(s)(2 x Type-A),2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C^®),3 x USB 2.0 port(s)

USB

4 x USB 3.2 Gen 1 ports (4 x Type-A)

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

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

ASUS Special Features

ASUS Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS EZ DIY
- Box Headers
Bespoke Motherboard Design & Business Focused Features
- ASUS Self Recovering BIOS
- ASUS Event Log
- ASUS Commercial BIOS kit
- Anti-Moisture
- 24/7 Reliability
- Overcurrent Protection
TPM2.0 IC Onboard

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

Back I/O Ports

1 x Realtek® RTL8111H,2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C^®),2 x USB 3.2 Gen 1 Type-A,2 x DisplayPort,1 x PS/2 keyboard (purple),1 x PS/2 mouse (green),1 x HDMI,2 x USB 2.0,3 x Audio jack(s)

Internal I/O Ports

1 x COM port header,2 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 4 USB 3.2 Gen 1 port(s),1 x SMBus header(s),2 x USB 2.0 connector(s) support(s) additional 3 USB 2.0 port(s),2 x M.2 Socket 3 with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode),1 x Thunderbolt header(s),1 x Chassis intrusion header,1 x CPU Fan connector(s),2 x Chassis Fan connector(s),1 x M.2 with E key for Wi-Fi module,1 x LPT header,4 x SATA 6Gb/s connector(s),1 x 24-pin EATX Power connector(s),1 x 8-pin EATX 12V Power connectors,1 x Front panel audio connector(s) (AAFP),1 x System panel(s),1 x Clear CMOS jumper(s),1 x COM port header,1 x LPC Debug header,1 x Speaker connector

BIOS

128 Mb Flash ROM, UEFI AMI BIOS

256 Mb Flash ROM, UEFI AMI BIOS

Operating System

Windows 10 64bit

Windows® 10 64-bit

Form Factor

mATX Form Factor,9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

Note

*1 The PCIe x4 slot runs x2 mode when the PCI slot is occupied.

- Specifications and features vary by model, and all images are illustrative. Please refer specification pages for full details.
- *Precise specifications and features vary by model. Please refer to the specification page
- The product (electrical , electronic equipment, Mercury-containing button cell battery) should not be placed in municipal waste. Check local regulations for disposal of electronic products.
- The use of trademark symbol (TM, ®) appears on this website means that the word text, trademarks, logos or slogans, is being used as trademark under common laws protection and/or registered as Trademark in U.S. and/or other country/region.
- Learn more about battery usage, removal, replacement, and related safety guidelines
**Product specifications and battery design may vary depending on the model. For any questions, please contact ASUS official customer service.