ASUS P5KPL-E. Supported memory types: DDR2 1066(O.C.)/800/667, Maximum internal memory: 4 GB. Processor family: Intel, Processor socket: Socket 775, Processors compatible: Intel® Core™2 Quad / Core™2 Extreme / Core™2 Duo / Pentium® Extreme / Pentium® D / Pentium® 4. Audio system: Realtek ALC883 HDA, Audio output channels: 7.1. Width: 305 mm, Depth: 203 mm. Controller (2nd) interface type: UltraDMA 100/66/33, Controller interface type: Serial ATA II