AMD A520 (Ryzen™ AM4) micro-ATX motherboard with M.2 support, Realtek 1Gb Ethernet, HDMI™, SATA 6 Gbps, rear and front USB 5Gbps support
  • AMD AM4 Socket: Ready for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series Desktop Processors
  • Ultrafast Connectivity: M.2 support, Realtek 1Gb Ethernet, rear and front USB 5Gbps support
  • Comprehensive Cooling: PCH heatsink and Fan Xpert
  • 5X Protection III: Multiple hardware safeguards for all-around system protection
  • ASUS Control Center Express: Real-time IT monitoring and management software for enhanced data protection
Win11
PRIME A520M-R-CSM
PRIME A520M-R -CSMfront view
kv_background_light kv_background_light kv_background_dark Prime series motherboard provides users and PC DIY builders a range of performance tuning options via intuitive software and firmware features.

A520M-R-CSM



ASUS PRIME series motherboards are expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, PRIME A520 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.


icon-AMD
All specs of the Prime series motherboard All specs of the Prime series motherboard
  • PS/2 mouse
  • PS/2 keyboard
  • HDMI™
  • 4 x USB 5Gbps
  • 2 x USB 2.0
  • 1Gb Ethernet
  • 3 x Audio jacks
  • Expansion Slots
    • 1 x PCIe 3.0 x16 SafeSlot Core
    • 1 x PCIe 3.0 x1
  • Audio Features
    • Audio Shielding
    • Premium audio capacitors
    • Dedicated audio PCB layers
  • 4 x Front USB 2.0
  • DIGI+ VRM
  • 2 x DDR4
  • AMD AM4 Socket
  • 2 x Front USB 5Gbps
  • 32Gb/s M.2
    (PCIe 3.0 x4 & SATA modes)
  • AMD A520 Chipset
  • 4 x SATA 6Gb/s

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.


* Lifecycle support, program offering and supply status may vary by region. Please consult your local sales representative for more information.


Learn more about ASUS CSM program
decoration_arrow

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
decoration_arrow

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

FLEXIBILITY



Comprehensive controls form the foundation of the ASUS PRIME series. The PRIME A520 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity.
background_decoration background_decoration

Intelligent Control


background_decoration background_decoration
EPU UI of FAN Xpert for cooling controls Digi+ VRM feature icon

CPU Performance Boost

AMD Precision Boost Overdrive(PBO) pushes the CPU current and voltage budget to opportunistically increase performance. By aggressively tuning the PBO parameters, AMD‘s algorithm can leverage the motherboard’s robust power solution to ramp up performance even higher.

All-Around Energy Efficiency

With the Energy Processing Unit (EPU), you‘ll enjoy system-wide power savings.The EPU automatically optimizes power consumption and maximizes savings with Away mode.

Flexible Cooling Controls

ASUS Fan Xpert software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.

Precise Digital Power Control

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.

UEFI BIOS



The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
background_decoration

Advanced Tuning for Serious Tweakers



An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.

Search Function


Quickly and easily find the option or setting you need.

ASUS User Profile


Port configuration settings between different BIOS versions or share them with friends.

Quick and Simple Setup



EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.

Intuitive Graphical Fan Control


Fine-tune individual fan settings simply by dragging a curve with the mouse.

EZ XMP


Improve DRAM performance with one click.

COOLING


PRIME A520 series features comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS.
Prime motherboard Prime motherboard with multiple temperature sources image Prime motherboard with smart protection image Prime motherboard with 4-Pin PWM/DC Fan image

Multiple Temperature Sources



Each header can dynamically reference three thermal sensors. Fan Xpert allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

Smart Protection



A dedicated integrated circuit protects the fan header from overheating and overcurrent.

4-Pin PWM/DC Fan



Each onboard header supports auto-detection of PWM or DC fans.

PERFORMANCE



ASUS A520 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible data transfer options.
background_decoration background_decoration

Storage



M.2 Support (up to 32 Gbps)



M.2 Slot supports data-transfer speed up to 32Gbps* via x4 PCI Express 3.0 bandwidth, enabling quicker boot-up and app load times with OS or application drives.


* Actual transmission speeds will be lower than the theoretical maximum speed.

supports PCIe 3.0 M.2.

Connectivity

features USB 5Gbps port.

USB 5Gbps

Numerous USB ports support high-end rigs loaded with peripherals, including rear-panel USB Type-A connectors with fast USB 5Gbps connectivity for compatible cases.

Realtek 1Gb Ethernet

Realtek 1Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.
Lower CPU workload
High TCP and UDP throughput
features ASUS LANGuard.

LANGuard

ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.
backgroud decoration

CUSTOMIZATION



The PRIME A520 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive interface that let you customize your system to create a uniquely personal look.

Outstanding Audio

500M

Deep-learning database

Audio

Input/output

High

Fidelity

Minimal

Performance Impact

Hear the Difference

Background noise

Other human voice

Human speech

Realtek Codec and Unique Design Features for Pristine, Powerful Audio

logo s1220a
The unique S1220A audio codec designed in close collaboration with Realtek provides pristine audio quality via an unprecedented 120 dB signal-to-noise (SNR) ratio for the stereo line out and a 113 dB SNR for the line in. An impedance-sensing circuit also adjusts gain for optimal headphone volume.
DTS:X logo
DTS:X® Ultra adds a spatial audio feature to boost headphones and speakers for enhanced gaming, VR and extended-reality experiences. DTS:X Ultra supports sound based on channels, scenes, and objects to allow for deeper sonic immersion in enabled content. It also provides post-processing enhancements and device-level tuning for DTS® codecs.

Combined onboard features deliver elevated audio


Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.

Audio Shielding


Audio shielding ensures precision analog/digital separation and greatly reduced multi-lateral interference.

Dedicated Audio PCB Layers


Separate layers for left and right tracks ensures both channels deliver consistent, equal quality.

Premium Audio Capacitors


Provides warm, natural, and immersive sound with exceptional clarity and fidelity.

Personalization

background_decoration background_decoration

Armoury Crate


Within a single intuitive interface, Armoury Crate offers easily customized settings for every compatible device in your arsenal, plus controls for an ever-growing family of ASUS products, including keyboard and mouse preferences. Armoury Crate also integrates product registration and a news feed so that you never miss updates of interest to the ASUS community.
DOWNLOAD NOW

DIY Friendly

background_decoration

Q-LED Core


The Q-LED Core display produces light patterns by power LED during the Power-On Self-Test (POST) that can help users troubleshoot potential issues.
No CPU Detected
features Q-LED Core. features Q-LED Core.
Fast blinking

4 Hz (0.25s)

No VGA Detected
q_led q_led2
Slow blinking

1/2 Hz (2s)

No Boot Device Detected
q_led q_led2
Very slow blinking

1/8 Hz (8s)

Installation Completed
q_led q_led2
Solid light

SafeSlot Core


SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that's anchored to the motherboard by a special hook, Safeslot Core provides 1.6X-stronger retention and 1.3X-greater shearing resistance than standard expansion slots.
Features SafeSlot Core
Overvoltage Protection icon
Overvoltage Protection

World-class circuit-protecting power design
An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
Stainless-Steel Back I/O icon
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.
Learn more

1000+
Compatible devices and components


The PRIME A520 series provides superior compatibility with thousands of components and our memory support list identifies memory compatibility, giving you more choices for worry-free PC-building experiences.

8000+
Validation hours


Every ASUS motherboard is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
Temperature and humidity tests
Temperature and humidity tests
Ensures components withstand extreme conditions.
Thermal measurement tests
Thermal measurement tests
Ensures that the system remains cool and stable under the heaviest loads.
Insertion tests
Insertion tests
Every port and connector is put through repeated installation cycles.
Aging tests
Aging tests
Up to 48-hour aging test ensures reliability.
Power-consumption tests
Power-consumption tests
Checked for world-class energy efficiency.
Temperature and DC margin tests
Temperature and DC margin tests
Ensures that the motherboard is capable of coping with voltages fluctuations caused by varying temperatures.
Thermal-shock tests
Thermal-shock tests
Ensures ability to survive temperature changes during transportation.
Non-operation shock tests
Non-operation shock tests
Built to withstand jolts that may occur during shipping.
Burn-in tests
Burn-in tests
Every component is checked to ensure flawless operation.
Installation tests
Installation tests
Connector placement is double-checked to ensure hassle-free installation.
Drop tests
Drop tests
Drop tests from various heights ensure durability.
Salt and spray tests
Salt and spray tests
Tested for I/O reliability, prolonged lifespan and rust-resistance.
ASUS Enhanced Memory Profile UI setting

Exclusive AEMP


ASUS Enhanced Memory Profile (AEMP) is an exclusive firmware feature for PMIC-restricted memory modules. AEMP automatically detects the memory chips on your kit and then presents optimized frequency, timing and voltage profiles that you can effortlessly apply to unleash performance.
comparison icon
(0)