AS Rock LGA1155 DDR3 SATA3 USB3.0 Quad CrossFireX and Quad SLI A GbE ATX Motherboard Z77 EXTREME4 CPU: LGA1155; Supports 2nd/3rd Generation Intel Core i7/ i5/ i3 Processor; Supports Intel Turbo Boost 2.0 Technology; Supports Hyper-Threading Technology Chipset: Intel Z77 Memory: 4X DDR3-2800+(OC)/2400(OC)/2133(OC)/1866(OC)/1600/1333/1066 DIMM Slots, Non-ECC, Unbuffered, Dual Channel, Maxi Capacity up to 32GB Slots: 2X PCI-Express 3.0 X16 Slots (runs at X8), 2 X PCI Express 2.0 X1 Slots, 2 X PCI Slots SATA: 4X SATA3 Ports (one connector is shared with eSATA3 port), Two Support RAID 0, 1, 5, 10; 4X SATA2 Ports, Support RAID 0, 1, 5, 10 Ports: 8X USB 2.0 Ports (2 rear, 6 via header); 6X USB 3.0 Ports (4 rear,?2 via header); 1X PS/2 Keyboard/Mouse Port; 1X?VGA Port; 1X DVI Port; 1X Optical SPDIF Out Port; 1X HDMI Port; 1X eSATA3 Port; 1X RJ45 LAN Port; Audio I/O Jacks Power Connector: 1X 24-Pin ATX Main Power Connector, 1X 8-Pin 12V Power Connector CPU: LGA1155; Supports 2nd/3rd Generation Intel Core i7/ i5/ i3 Processor; Supports Intel Turbo Boost 2.0 Technology; Supports Hyper-Threading Technology Chipset: Intel Z77 Memory: 4X DDR3-2800+(OC)/2400(OC)/2133(OC)/1866(OC)/1600/1333/1066 DIMM Slots, Non-ECC, Unbuffered, Dual Channel, Maxi Capacity up to 32GB Slots: 2X PCI-Express 3.0 X16 Slots (runs at X8), 2 X PCI Express 2.0 X1 Slots, 2 X PCI Slots SATA: 4X SATA3 Ports (one connector is shared with eSATA3 port), Two Support RAID 0, 1, 5, 10; 4X SATA2 Ports, Support RAID 0, 1, 5, 10 Ports: 8X USB 2.0 Ports (2 rear, 6 via header); 6X USB 3.0 Ports (4 rear,?2 via header); 1X PS/2 Keyboard/Mouse Port; 1X?VGA Port; 1X DVI Port; 1X Optical SPDIF Out Port; 1X HDMI Port; 1X eSATA3 Port; 1X RJ45 LAN Port; Audio I/O Jacks Power Connector: 1X 24-Pin ATX Main Power Connector, 1X 8-Pin 12V Power Connector Please refer to the manufacturers website for user manual and installation process.