Product DescriptionFor the Intel Core 2 Extreme/Core 2 Quad/Core 2 Duo Processors / Max: 8GB DDR2 RAM / 2 x eSATA ports / 2 x PCI-E x16, 2 x PCI-E, 1 x PCI Ultra DMA 133 IDE Controller Supports AHCI controller with SATA RAID 0/1/5/10 Two mazarine PCI Express x16 slots (PCI Express Bus SPEC V2.0 compliant; supports CrossFire Technology) Two PCI Express x1 slots. (support PCI Express Bus specification v1.0a compliant) One 32-bit v2.3 master PCI bus slot PCI Express LAN 10/100/1000 Fast Ethernet by Realtek 8111B Realtek ALC888 Audio Back Panel I/O Ports - PS/2 (Keyboard), PS/2 (Mouse), IEEE1394 (FireWire), 2 x eSATA, RJ-45, 8 x USB 2.0/1.1, Audio Jacks, Optical S/PDIF port ATX form factor