Biostar A55MH. Supported memory types: DDR3-SDRAM, Memory channels support: dual, Supported memory clock speeds: 800, 1066, 1333, 1600, 1866 MHz. Processor family: AMD, Compatible processor series: Dual-Core E, Processor socket: Socket FM1. Audio output channels: 5.1, Audio system: HD. PCI Express slots version: 2.0. Width: 244 mm, Depth: 200 mm