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Green micro-ATX motherboard with AM4 socket, two DDR4 slots, one PCIe x16 slot, two SATA ports and an M.2 slot

ASUS

ASUS PRO A520M-C II/CSM AMD motherboard

SKU CH-YPVH-GZD74 MPN PRO A520M-C II/CSM

Micro-ATX AMD A520 board with AM4 socket supporting Ryzen 3000, 4000 and 5000 series CPUs, two DDR4 slots up to 64 GB, one PCIe 3.0 x16 slot, two SATA ports and an M.2 slot for 2242/2260/2280 drives

  • CPU Socket TypeAM4
  • CPU TypeRyzen 3000 Series / Ryzen 4000 Series / Ryzen 4000G Series /
  • ChipsetAMD A520
  • Number of Memory Slots2x288pin (DDR4)
  • Memory Standard4866(O.C.)/4600(O.C.)/4466(O.C.)/4400(O.C.)/4333(O.C.)/4266(
  • Maximum Memory Supported64GB
  • Supports Ryzen 5000, 4000 G-Series and 3000 Series CPUs on AM4 socket
  • Self-recovering BIOS restores firmware automatically from a verified backup
  • Micro-ATX form factor fits compact business chassis and saves space
  • Dual-channel DDR4 up to 64 GB with speeds to 4866 MHz overclocked
  • Moisture-resistant coating protects circuitry in harsh operating environments

Socket AM4 Ryzen motherboard

The ASUS PRO A520M-C II/CSM is a micro-ATX board built for AMD Ryzen 3000, 4000, 4000G, 5000 and 5000G series processors. It targets business and commercial deployments that value long-term availability and remote manageability. Two DDR4 slots support up to 64 GB of memory in dual-channel mode. The A520 chipset provides a stable platform for everyday office workloads.

PCIe 3.0 and SATA limits

A single PCI Express 3.0 x16 slot handles graphics or add-in cards at Gen 3 speeds. Storage connects through two SATA 6Gb/s ports and one M.2 slot that accepts 2242, 2260 or 2280 modules operating in either PCIe 3.0 x4 or SATA mode. Memory speeds range from 2133 MHz up to 4866 MHz when overclocked, with XMP 2.0 profile support. The chipset does not offer PCIe 4.0 or additional high-speed lanes.

Business-grade protection and management

A moisture-resistant coating shields the PCB from humid environments. The self-recovering BIOS restores firmware automatically from a verified backup. An LPC debug header and event log simplify troubleshooting for IT staff. The SMBUS header enables DASH LAN connectivity for remote management, while ASUS Control Center Express streamlines endpoint administration across the fleet.

Pontos fortes

  • Supports Ryzen 5000, 4000 G-Series and 3000 Series CPUs on AM4 socket
  • Self-recovering BIOS restores firmware automatically from a verified backup
  • Micro-ATX form factor fits compact business chassis and saves space
  • Dual-channel DDR4 up to 64 GB with speeds to 4866 MHz overclocked
  • Moisture-resistant coating protects circuitry in harsh operating environments

Especificações

BrandASUS
ModelPRO A520M-C II/CSM
CPU Socket TypeAM4
CPU TypeRyzen 3000 Series / Ryzen 4000 Series / Ryzen 4000G Series / Ryzen 5000 Series / Ryzen 5000G Series
ChipsetAMD A520
Number of Memory Slots2x288pin (DDR4)
Memory Standard4866(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*
*ECC memory (ECC mode) support varies by CPU.
Maximum Memory Supported64GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 2.0
PCI Express 3.0 x161 x PCI Express 3.0 x16
Serial ATA (SATA)2 x SATA 6Gb/s
M.2AMD 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)
Form FactorMicro ATX
Peso de envio1.36 kg
Dimensões da embalagem279 × 254 × 51 mm

Perguntas sobre este artigo

Should I pick the 3200 MHz or 4866 MHz memory speed for this board?

The board runs DDR4 at 3200 MHz natively; speeds up to 4866 MHz are overclock profiles that need compatible modules and manual tuning.

What does the 4866 MHz figure mean once the board is in a real machine?

4866 MHz is the highest validated overclock speed; the system will boot at 2133 MHz and reach 4866 MHz only with XMP 2.0 modules and BIOS adjustment.

Which M.2 interface does the slot use and what does it cap in practice?

The M.2 slot supports PCIe 3.0 x4 and SATA modes, so a PCIe 3.0 x4 drive is limited to that bandwidth while a SATA drive runs at SATA 6Gb/s.

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