MSI B450M-A PRO MAX IIAM4 · Micro-ATX · DDR4 · board-only configuration · MSI global specification- Chipset
- AMD B450This one: AMD A520
MOTHERBOARDS
MSI A520M-A PRO
AM4 · Micro-ATX · DDR4 · board only
- CPU socket
- AM4
- Chipset
- AMD A520
- Form factor
- Micro-ATX; 236 × 200 mm
A compact Micro-ATX AM4 motherboard with AMD A520: two DDR4 slots (up to 64 GB, DDR4-4600+ OC), a PCIe 3.0 x16 graphics slot, one M.2 slot and Realtek 1 Gb Ethernet.
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THE ACTUAL PRODUCT
Compare with MSI B450M-A PRO MAX II
Specifications checked 21 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked motherboards by key specifications, with what differs from the MSI A520M-A PRO. The first matches the Compare button above.
MSI B450M-A PRO MAX IIAM4 · Micro-ATX · DDR4 · board-only configuration · MSI global specification
MSI PRO H610M-G DDR4LGA1700 · Micro-ATX · DDR4 · board-only configuration · MSI global specification- CPU socket
- LGA 1700This one: AM4
- Chipset
- Intel H610This one: AMD A520
ASUS Pro A520M-C/CSMUK manufacturer specification · Pro A520M-C/CSM- Form factor
- 9.6 inch x 9.0 inch ( 24.4 cm x 22.9 cm ),mATX Form FactorThis one: Micro-ATX; 236 × 200 mm
Key strengths
HDMI 2.1 (up to 4096 × 2160 at 60 Hz) and DVI-D outputs for processors with integrated graphics, plus four rear 5 Gb/s USB ports.
Memory rated up to DDR4-4600+ (OC) in a compact 236 × 200 mm board.
Before you buy
Only two DDR4 slots (64 GB), one M.2 slot at PCIe 3.0 x4 (SATA only with Athlon processors), 1 Gb Ethernet and no Wi-Fi.
Works with
Products in this catalogue that list the same socket or memory type as the MSI A520M-A PRO. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.
- 7 AM4 processorsSocket AM4 on both, from cited specifications
- 8 DDR4 memory kitsMemory type DDR4 on both, from cited specifications
Every specification. With its source.
Full specifications
Exact configuration: AM4 · Micro-ATX · DDR4 · board-only configuration · MSI global specification
24 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Platform & board
3 items
Memory
5 items
- DIMM slots
- 2
Physical DDR4 module positions, not included modules. Consult the board manual for population order and compatible capacities.
Source - Maximum listed memory
- 64 GB
Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR4 slots require DDR4 modules; DDR4 and DDR5 are not interchangeable.
Source - Memory type, slots and limit
- 2 DDR4 DIMM slots; dual channel; up to 64 GB; up to DDR4-4600+ (OC); A-XMP; non-ECC unbuffered
The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 3866 MHz. JEDEC speeds run up to DDR4-3200. · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable.
Source - Memory population OC limits
- 1DPC 1R: 4600 MHz; 1DPC 2R: 3866 MHz
MSI labels these memory speeds in MHz (manufacturer notation); they are the rated data rates. · Manufacturer A-XMP/OC limits, not guaranteed stability or measured performance. CPU, BIOS and memory-module compatibility apply.
Source - ECC memory operating mode
- ECC UDIMM accepted in non-ECC mode
ECC modules run in non-ECC mode, so error correction is not active.
Source
Expansion slots
2 items
Storage
5 items
- Onboard M.2 storage slots
- 1
Onboard M.2 storage positions only. With Athlon processors with Radeon Vega Graphics, MSI lists SATA mode only for M.2. Supported M.2 lengths are 2242/2260/2280; verify the exact processor support list.
Source - SATA storage ports
- 4
SATA 6 Gb/s connectors, not supplied drives or power cables. With Athlon processors with Radeon Vega Graphics, MSI lists SATA mode only for M.2. Supported M.2 lengths are 2242/2260/2280; verify the exact processor support list.
Source - Storage interfaces
- 1 × M.2 PCIe 3.0 x4; M.2 slot also supports SATA; 4 × SATA 6 Gb/s
The M.2 slot connects to the CPU. · With Athlon processors with Radeon Vega Graphics the M.2 slot works in SATA mode only. It accepts 2242/2260/2280 drives.
Source - SATA RAID modes
- RAID 0/1/10Source
- NVMe RAID modes
- Not provided
MSI lists RAID modes for SATA drives only; NVMe RAID support is not stated.
Source
USB & rear connections
3 items
- Processor-dependent display outputs
- HDMI 2.1: up to 4096×2160 at 60 Hz; DVI-D: up to 1920×1200 at 60 Hz
Requires a processor with integrated graphics; supported modes depend on the CPU.
Source - Rear USB ports
- 2 USB 2.0; 4 USB 5 Gb/s Type-A
The detailed specification identifies the two rear USB 2.0 ports as Type-A.
Source - Front USB header capacity
- 4 USB 2.0; 2 USB 5 Gb/s
Internal-header capacity; requires compatible case ports and wiring. Not rear-panel sockets.
Source
Networking
1 item
- Network interfaces
- Realtek 8111H 1 Gb Ethernet
Wired Ethernet only; MSI lists no Wi-Fi or Bluetooth hardware for this board.
Source
Audio
1 item
- Onboard audio hardware
- Realtek ALC892 or ALC897 codec; 7.1-channel
Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.
Source
Power, cooling & lighting
1 item
- Fan and pump headers
- 1 CPU; 1 system fan header
Counts do not establish connector current limits.
Source
BIOS, software & diagnostics
3 items
- CPU support / BIOS source
- AMD Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 / 3000 G-Series
Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board.
Source - Rear Flash BIOS button
- Not provided
MSI's rear-panel list for this board does not mention a Flash BIOS button; check the manual if you need BIOS flashback.
Source - Diagnostic indicators
- EZ Debug LED
MSI's datasheet lists EZ Debug LED without the LED count; it is not a numeric POST code display.
Source
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