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

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CPU

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

* 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 *

Memory

DDR4 4866(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.)/346(O.C.)/3400(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 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.

* 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.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3733(O.C.)/3600(O.C.)/3466(O.C.)/3333(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *,ECC Memory (ECC mode) support varies by CPU.,Dual Channel Memory Architecture

Chipset

AMD B550

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 : ,4 x SATA 6Gb/s port(s),,Support Raid 0, 1, 10,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support,1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support

Manageability

WOL by PME, PXE

WOL by PXE

Form Factor

24.4cm x 22.9cm

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

Graphic

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

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 ACC Express Activation Key Card

1 x User manual

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

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

1 x PCI slot

AMD Ryzen™ 5000 G-Series/ 4000 G-Series Desktop Processors,AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors,AMD B550 Chipset,2 x PCIe 3.0 x1,1 x PCIe 4.0 x16 (x16 mode),1 x PCIe 3.0 x16 (x16 mode)

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 D-Sub port

1 x DVI-D port

1 x HDMI™ port

1 x Realtek 1Gb Ethernet port

3 x Audio jacks

1 x COM port

1 x PS/2 Keyboard (purple) port

1 x PS/2 Mouse (green) port

LAN

Realtek RTL8111H 1Gb Ethernet

Software Features

ASUS Exclusive Software

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

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 for 60 days)
WinRAR
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode

Audio

Realtek ALC897 7.1 Surround Sound High Definition Audio CODEC*
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking

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

- Premium audio capacitors,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,- LED-illuminated design,- Audio Shielding,- Dedicated audio PCB layers,Audio Feature :,* Choose the chassis with HD audio module in front panel to support 8-channel audio output.

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

1 x Clear CMOS header

1 x Chassis Intrude header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x LPC debug header

1 x LPT header

1 x SMBUS header

1 x Speaker header

1 x 10-1 pin System Panel header

BIOS

128 Mb Flash ROM, UEFI AMI BIOS

256 Mb Flash ROM, UEFI AMI BIOS

USB Ports

4 x USB 2.0 port(s)(4 x Type-A),Front USB Port ( Total 6 ),Rear USB Port ( Total 6 ),2 x USB 3.2 Gen 2 port(s)(2 x Type-A),4 x USB 3.2 Gen 1 port(s)(4 x Type-A),2 x USB 3.2 Gen 1 port(s)(2 x Type-A)

Operating System

Windows 10 64bit

Windows® 10 64-bit

ASUS 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
AURA Sync
- Standard RGB headers
- Addressable Gen 2 RGB header
ASUS Lighting Control

Graphics

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

*The DVI-D port and the DisplayPort cannot work at the same time. Only the DVI-D port functions when the two ports are both connected.

Back I/O Ports

2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A),4 x USB 3.2 Gen 1 (blue) Type-A,1 x PS/2 keyboard/mouse combo port(s),1 x DVI-D,1 x D-Sub,1 x HDMI,1 x LAN (RJ45) port(s),3 x Audio jack(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

Internal I/O Ports

1 x COM port header,1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s),1 x CPU Fan connector(s),1 x CPU OPT Fan connector(s),2 x Chassis Fan connector(s),2 x Aura RGB Strip Headers,1 x Addressable Gen 2 header(s),2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s),1 x SPI TPM header,4 x SATA 6Gb/s connector(s),1 x S/PDIF out header(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 Clear CMOS jumper(s),1 x System panel connector,1 x COM port header,1 x Speaker connector,1 x M.2 Socket 3 with M Key, type 2242/2260/2280/22110 storage devices support (SATA mode & X4 PCIE mode),1 x M.2 Socket 3 with M Key, type 2242/2260/2280 storage devices support (SATA mode & X4 PCIE mode)

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 Coating

- 24/7 Reliability

- Overcurrent Protection

TPM 2.0 IC Onboard

- 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.
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- 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.