Gigabyte GA-8I915P Duo Pro. Supported memory types: Dual Channel DDR2 533/400 Dual Channel DDR400/333, Maximum internal memory: 4 GB. Processor family: Intel, Processor socket: Socket 775, Processors compatible: Pentium® 4. Audio system: Azalia (C-Media 9880). Dimensions (WxDxH): 305 x 244 mm, Width: 305 mm, Depth: 244 mm. Controller interface type: 4*Serial ATA, 3*PATA