Asrock 939SLI-eSATA2. Supported memory types: DDR400/333/266, Maximum internal memory: 4 GB, Controller type: DDR. Processor family: AMD, Processor socket: Socket 939, Processors compatible: AMD Athlon™ 64 / 64FX / 64X2. Audio output: 5.1, Audio system: Realtek ALC 660 & HD Audio. Width: 305 mm, Depth: 244 mm. RAID levels: 0, 1, 0+1, JBOD, 5