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Green micro-ATX board with black sockets and silver heatsinks

MSI

MSI FM2-A55M-E33 AMD A55 motherboard Socket FM2 DDR3 32GB

SKU CH-351K-33J3A

Micro ATX board for Socket FM2 AMD processors with dual-channel DDR3 up to 32 GB, one PCI Express 2.0 x16 slot, four SATA ports, Realtek 8.1-channel audio and Gigabit LAN

  • ProcessorAMD A10/A8/A6/A4 series processors supporting Socket FM2 arc
  • ChipsetAMD A55
  • CPU socketSocket FM2
  • Supported memorySupports dual-channel DDR3 2133 (overclocking)/1866/1600/133
  • Max supported RAM32 GB
  • PCI slots1 PCI Express 2.0 x16 slot 1 PCI Express 2.0 x1 slot 1 PCI s
  • Supports AMD A10/A8/A6/A4 processors with Socket FM2 architecture
  • Dual-channel DDR3 memory up to 2133 MHz overclocking and 32GB capacity
  • AMD A55 chipset provides four SATA II ports for storage expansion
  • Realtek ALC887 audio delivers 8.1 channel sound with intelligent interface detection
  • Realtek 8111E Gigabit LAN handles 10, 100 and 1000 Mb/s network speeds

Socket FM2 platform board

This micro-ATX motherboard uses the AMD A55 chipset to host Socket FM2 processors from the A10, A8, A6 and A4 families. It targets budget desktop builds and basic office upgrades that need a compact board with legacy expansion slots.

Upgrade path from older FM1 boards

The board replaces Socket FM1 designs and adds dual-channel DDR3 support up to 2133 MHz when overclocked, plus a PCI Express 2.0 x16 slot for discrete graphics. The jump is worthwhile when moving to Trinity or Richland APUs for integrated graphics headroom.

Straightforward installation with standard parts

The package includes a CMOS battery, one SATA cable and an I/O shield, so only a compatible DDR3 kit and CPU cooler are required. Common issues are forgetting to seat the 24-pin and 4-pin power connectors fully and leaving the I/O shield out of the case.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $34.99
Cheaper than about 95% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI FM2-A55M-E33
Model nameMSI FM2-A55M-E33
Processor
ProcessorAMD A10/A8/A6/A4 series processors supporting Socket FM2 architecture
CPU socketSocket FM2
ChipsetAMD A55
Memory
Supported memorySupports dual-channel DDR3 2133 (overclocking)/1866/1600/1333/1066 MHz memory
Max supported RAM32 GB
Storage
SATA and RAID support4XSATA II interface
Audio & video
Audio chipRealtek ALC887 Chip
- 8.1 channel sound effects that support intelligent sound interface detection
Compatible with Azalia 1.0 specifications
Connectivity
Ethernet controllerRealtek PCI-E GbLAN Controller 8111E Chip
Supports 10Mb/s, 100Mb/s and 1000Mb/s
Compliant with PCI-Express bus specification v1.0a.
Ports & slots
PCI slots1 PCI Express 2.0 x16 slot
1 PCI Express 2.0 x1 slot
1 PCI slot
Onboard USB headers4 USB 2.0 ports (backplane)

Questions about this item

Will the micro-ATX board fit in my case and align with the I/O shield?

The micro-ATX form factor mounts in any chassis with matching standoffs; use the supplied chassis I/O back panel to align the rear ports correctly.

Which slot should I use for the graphics card and how do I secure it?

Install the graphics card in the single PCI Express 2.0 x16 slot, press until the retention latch clicks, then fasten the bracket screw to the case.

What memory can I add later and what is the maximum capacity?

Add dual-channel DDR3 modules up to 2133 MHz overclocked; the board supports a total of 32 GB across its memory slots.

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