Gigabyte GA-H77M-D3H. Supported memory types: DDR3-SDRAM, Memory slots type: DIMM, Memory channels support: dual. Processor family: Intel, Compatible processor series: Core i3, Core i5, Core i7, Processor socket: Socket H2(1155). Audio output channels: 7.1, Audio system: VIA VT2021. PCI Express slots version: 2.0, 3.0. Width: 244 mm, Depth: 220 mm