Micro-ATX AMD A520 business motherboard with enhanced security, reliability and manageability

AMD AM4 socket: Ready for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
ASUS-exclusive self-recovering BIOS technology for automatic system BIOS recovery from a verified backup
ASUS LPC debug header for more efficient troubleshooting
Event log for capturing and managing detailed system information
Innovative moisture-resistant coating to protect the motherboard from harsh environments
Commercial BIOS kit to make customization faster and more efficient
ASUS Control Center Express(ACCE) to make IT endpoint management easier

ASUS Pro business motherboards provide enhanced features to smooth your IT operations, including comprehensive system protection, 24/7 stability and reliability and an improved management suite for easier customization. Known as the world's biggest and best-known motherboard brand, ASUS provides world-class after-sales service and guaranteed long-term availability to maximize your investment over the product life cycle and offers a high-quality, TCO-optimized solution for your business computing-needs.

ASUS Corporate Stable Model

ASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.

Learn more about ASUS Corporate Stable Model >

ASUS Control Center Express

ASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.

Learn more about ASUS Control Center Express >

Optimize IT endpoint management
Designed to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely
Automate IT maintenance
Allows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility
Securely manage all of endpoints
Securely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices

* ASUS Control Center Express is only available for CSM motherboards. Please consult your local sales representative for more information

1 PS/2

2 D-Sub

3 DVI-D

4 COM

5 HDMI

6 4 x USB 3.2 Gen 1

7 Realtek LAN

8 2 x USB 2.0

9 3 x Audio jacks

10 LPC Debug header

11 PCIe 3.0 x16
• ASUS SafeSlot Core

12 PCI

13 COM header

14 DIGI+ VRM & EPU

15 DDR4 Support

16 AMD AM4 socket for
Ryzen™ 5000 Series/ 4000 G-Series/
3000 Series Desktop Processors

17 1 x SATA 6Gb/s

18 2 x Front USB 3.2 Gen 1

19 32Gb/s M.2 support
PCIe 3.0 x4 & SATA mode

20 AMD A520 Chipset

21 3 x SATA 6Gb/s

22 4 x Front USB 2.0

23 LPT

Internationally Certified Business Motherboard

ASUS business motherboards are enterprise proven with leading quality that exceeds industry standards. Certified by multiple international safety and environmental organizations, ASUS business motherboards provide a safe, secure and sustainable solution, making them the ideal choice for your business.

ASUS Shield

Enhances system security from bottom to top
ASUS Reliant

Ensures consistent performance with the finest components and rigorous reliability testing
Management Suite

Makes customization and management more efficient

ASUS Shield

Enhances system security from bottom to top

ASUS Self-recovering BIOS

ASUS-exclusive BIOS protection technology automatically recovers the system BIOS with a verified backup in the event of an update failure, preventing the need to replace or reinstall hardware.

LEARN MORE

ASUS Secure Boot

ASUS business motherboard is set to check the firmware and signature of each piece of boot software.

Trusted Platform Module (TPM)

Hardware-based security offers better data protection, enhances network security, protects digital identities and ensures platform integrity.

Certified NIST SP 800-147

ASUS business motherboard is certified by the national computer security standards.

ASUS Self-recovering BIOS

With ASUS Self-recovering BIOS

The user simply needs one step to restore the latest BIOS update.

Benefits
Ensures safe BIOS updates
Reduces maintenance frequency and costs
Requires no extra software
Provides automatic update failure detection and recovery

Standard process for BIOS update crash recovery

The user needs four steps to reinstall the BIOS update:

ASUS Reliant

Ensures consistent performance with the finest components and rigorous reliability testing

ASUS Trouble Shooting Solution

ASUS Debug header is a 10-1 pin low pin count (LPC) header for connecting to debug cards for faster, more efficient motherboard troubleshooting. When connected to an ASUS Debug Card, administrators can view error and debugging codes on the integrated LCD display, and get better idea of initialization and recovery processes. ASUS business motherboards provide a complete troubleshooting solution, making mass production faster and more cost effective.

* Please contact your local sales representative for debug card information.
* Specifications and features vary by model, and all images are illustrative. Please refer to specification and gallery pages for full details.

24/7 Reliability Test

Optimized for twenty-four seven operations, the motherboard is tested under temperature up to 45°C and relative humidity up to 80% to ensure it can handle diverse temperature and humidity range of different location.

Anti-moisture Coating

Protection against moisture and corrosion

An innovative moisture-resistant coating protects the motherboard in humid environments, such as factories, libraries, data centers and internet cafes. It also minimizes internal corrosion by preventing adhesion and migration of moisture, prolonging the life of the motherboard.

Anti-sulfur Resistors

Consider long-term reliability of commercial product, ASUS business motherboard is equipped with anti-sulfur resistors. The resistors provide excellent resistance to sulfuration by constructed in a high grade ceramic body (aluminum oxide). With anti-sulfur resistors, ASUS business motherboard can be operated under the harsh environments.

LANGuard

Pumped-up throughput. 2.5X higher surge tolerance.

ASUS LANGuard is hardware-level networking protection that employs signal-coupling technology and premium anti-EMI surface-mounted capacitors ensuring a more reliable connection and better throughput, plus electrostatically guarded and surge-protected components for greater tolerance to static electricity and improved protection against surges.

Overvoltage Protection

World-class circuit-protecting power design

An exclusive circuit design with built-in voltage regulators to protect your chipset, connectivity ports, and audio codecs from damage caused by unexpected high-level voltages from unstable or inferior power supplies.

* Specifications and features vary by model, and all images are illustrative. Please refer to specification and gallery pages for full details.

Stainless-Steel Back I/O

3X corrosion-resistance for greater durability

Corrosion-resistant stainless steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.

ESD Guards

Electrostatic discharge protection

ASUS ESD Guards prevent damage from electrostatic discharge, up to +/- 10kV for air discharge and +/-15kV for contact discharge, arranged in an active-protective-circuit design that prolongs the life of components.

ASUS Management Suite

Makes customization and management more efficient

Event Log

A built-in event log enables easier troubleshooting by capturing useful system information

BIOS updates
Update status, latest version and update time
AC power loss
Abnormal power loss events
RTC reset
Time of real-time-clock (RTC) reset
Chassis intrusion
Record of when chassis is opened
Hardware changes
Modifications to CPU, memory or HDDs
Hardware status
USB over current, CPU over temperature, and CPU over voltage events

ASUS Commercial BIOS Kit

ASUS understands how important a customized product impacts users' mind share, experience the brand new Commercial BIOS Kit for partial BIOS update solution!

BIOS Value Edit Tool
Customize the BIOS options
BIOS Boot Logo Tool
Brand your builds with a customized boot logo
OEM Activation (OA) Tools
Add or remove the OEM Activation key
Desktop Management Interface (DMI)
Easily add customer information, such as company name, to the BIOS

Easy Assembly

Box Headers

All USB headers are box style, enabling fast connector installation and preventing pin damage.

Fixed-position Connectors

Connector positions on ASUS business motherboards remain consistent across product generations, protecting training, manufacturing and investments in supporting hardware.

* Specifications and features vary by model, and all images are illustrative. Please refer to specification and gallery pages for full details.

PRO A320M-R Wi-Fi
ASUS Shield
ASUS Reliant
ASUS Management Suite
Easy Assembly

Pro A520M-C/CSM