Asus pro a520m-c ii/csm business micro-atx motherboard socket am4 AMD a520 ddr4 pcie 3.0 m.2 quad display gbe black
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Asus pro a520m-c ii/csm business micro-atx motherboard socket am4 AMD a520 ddr4 pcie 3.0 m.2 quad display gbe black
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Description
Item No.
113e80ba-00da-4e32-b61d-9de20cd22c31
ASUS Pro A520M-C II/CSM — Business Micro-ATX for AMD AM4
AMD AM4 · A5202× DDR4 up to 64GBPCIe 3.0 + M.2Quad Display · GbE
The ASUS Pro A520M-C II/CSM is a business-focused micro-ATX motherboard built on the AMD A520 chipset and the Socket AM4 platform, supporting AMD Ryzen 5000, 4000 G-Series and 3000 processors. Sold under ASUS part number 90MB18F0-M0EAYC (EAN 4711081250098), it offers DDR4 memory, an M.2 NVMe slot, four SATA ports, a legacy PCI slot and quad display output (HDMI, DisplayPort,
Attributes
Motherboard Characteristics
- Processor Socket: Socket AM4
Details
ASUS Pro A520M-C II/CSM — Business Micro-ATX forAMD AM4
AMD AM4 · A5202× DDR4 up to 64GBPCIe 3.0 + M.2Quad Display · GbE
The ASUS Pro A520M-C II/CSM is a business-focused micro-ATX motherboard built on theAMD A520 chipset and the Socket AM4 platform, supportingAMD Ryzen 5000, 4000 G-Series and 3000 processors. Sold under ASUS part number 90MB18F0-M0EAYC (EAN 4711081250098), it offers DDR4 memory, an M.2 NVMe slot, four SATA ports, a legacy PCI slot and quad display ouTPUt (HDMI, DisplayPort, DVI-D and VGA) — with commercial-grade reliability, security and manageability for office and corporate deployments. Typically in stock with fast delivery across Cyprus.
Compatibility — read before buying
This is an AMD Socket AM4 board on the entry A520 chipset, supporting Ryzen 5000 / 4000G / 3000 processors — it is not compatible with Intel CPUs orAMD AM5 (Ryzen 7000+). It uses DDR4 memory only (not DDR5) and runs at PCIe 3.0 (the A520 chipset does not provide PCIe 4.0, and CPU overclocking is not supported).
Best For
✓Business and officeAMD AM4 desktops
✓Multi-monitor productivity setups (quad display)
✓Systems needing a legacy PCI slot
✓Reusing existing AM4 CPUs and DDR4 memory
✓IT-managed commercial deployments
✓Budget Ryzen office builds
Key Features
CSM business reliability
As an ASUS Pro CSM commercial board it offers enhanced longevity, security and manageability features for IT-managed corporate fleets.
Quad display + legacy PCI
HDMI 2.1, DisplayPort, DVI-D and VGA ouTPUts drive up to four monitors, while a legacy PCI slot supports older expansion cards still used in business and industrial settings.
DDR4 memory
Two DDR4 DIMM slots support up to 64GB of dual-channel memory at up to 4866 MHz (OC) for responsive office multitasking.
M.2 + 4× SATA storage
An M.2 slot (PCIe 3.0 x4 / SATA) for a fast NVMe boot drive, plus four SATA 6GB/s ports and Realtek ALC897 7.1 audio.
Technical Specifications
| Identification | |
| Part Number | 90MB18F0-M0EAYC |
| EAN / GTIN | 4711081250098 |
| Model | ASUS Pro A520M-C II/CSM |
| Brand | ASUS |
| Platform | |
| Chipset | AMD A520 |
| Socket | AMD AM4 |
| CPU Support | Ryzen 5000 / 4000G / 3000 |
| Form Factor | Micro-ATX |
| Program | CSM — Corporate Stable Model |
| Memory | |
| Slots | 2× DDR4 DIMM (Dual-Channel) |
| Max Capacity | 64GB |
| Speed | DDR4 up to 4866 MHz (OC) |
| Expansion & Storage | |
| PCIe Slots | 1× PCIe 3.0 x16 + 2× PCIe 3.0 x1 + 1× PCI (legacy) |
| M.2 | 1× M.2 PCIe 3.0 x4 / SATA (2242/2260/2280) |
| SATA | 4× SATA 6GB/s |
| Connectivity & I/O | |
| LAN | Gigabit LAN (RJ-45) |
| Display Out | 1× HDMI 2.1 (4K@60) + 1× DisplayPort + 1× DVI-D + 1× VGA |
| Rear USB | 4× USB 3.2 Gen 1 + 2× USB 2.0 + PS/2 |
| Audio | Realtek ALC897 7.1-channel HD Audio |
| Other | |
| Colour | Black |
| Operating System | Windows 11 64-bit |
Frequently Asked Questions
Singular Expert Insight
The Pro A520M-C II/CSM is built for the office, not gaming — its strengths are commercial reliability, quad display ouTPUt and a legacy PCI slot, ideal for business and industrialAMD AM4 systems. Note the A520 chipset is PCIe 3.0 only with no overclocking; for PCIe 4.0 and more performance, a B550 board like the ASRock B550 Pro4 is the step up. Pair it with a reliable internal NVMe SSD for fast, dependable storage.
Buyer's Guide
Buy it if
You want a reliable, manageableAMD AM4 business board with quad display ouTPUt and a legacy PCI slot for office or industrial use.
Skip it if
You want PCIe 4.0, CPU overclocking, DDR5 or the newer AM5 platform — choose a B550 (AM4) or B650 (AM5) board.
Also consider
The ASRock B550 Pro4 (PCIe 4.0, AM4) or anAMD B650 (AM5, DDR5) board for more performance.