MSI A55M-P33. Memory slots type: DIMM, Supported memory types: DDR3-SDRAM, Memory voltage: 1.5 V. Processor family: AMD, Processor socket: Socket FM1, Compatible processor series: AMD A series, AMD E series, Athlon II X2, Athlon II X4, Sempron. Audio system: Realtek ALC887, Audio output channels: 7.1. PCI Express slots version: 2.0. Width: 216 mm, Depth: 226 mm