ASUS P8B WS LGA 1155 Intel C206 ATX Intel Xeon E3 Server/Workstation Motherboard CPU: Socket 1155 Supports 2nd Generation Intel Core i7/i5/i3/XEON E3 Processors Chipset: Intel C206/ nVidia NF200 Chipset Memory: 4x 240pin DDR3-1333/1066 DIMMs, Dual Channel Slots: 4x PCI-Express 2.0 x16 Slots (one run on x8, two run on x4, Support ATI Quad-CrossFireX Technology); 1x PCI-Express 2.0 x1 Slots; 1x PCI slot. SATA: 4x SATA2 Ports, 2x SATA3 Ports, Support RAID 0/ 1/ 5/ 10 Audio: Integrated 8-channel High Definition Audio CODEC LAN: Dual Server-Class Gigabit LAN Controller Ports: 12x USB 2.0 Ports(6 rear, 6 at mid-board); 2x USB 3.0 Ports; 1x PS/2 Port; 1x DVI Port; 1x IEEE 1394 Port; 1x Optical S/PDIF-Out; 1x Coaxial S/PDIF-Out; 2x RJ45 LAN Ports; Audio I/O jacks