Processor: Intel Core™ i7,Core™ i5,Core™ i3 processors, Socket LGA1156 Chipset: Intel H55Front Side Bus: Memory: Dual channel DDR3 2000(oc)/1600/1333/1066 x 4 DIMMs, Max. 16GBVGA on Die: Integrated Intel GMA HD graphics engineExpansion Slots: 1* PCIe2.0 x16, 3* PCIe x1,3* PCIIDE: One ATA133Serial ATA(SATA)/RAID: 6* SATAII + 2* eSATA Audio: 7.1 channel HDA LAN: Gigabit LanIEEE1394: N/ABack Panel I/O Ports: 1 x PS/2 keyboard port 1 x RJ45 LAN port 1 x DVI connector 2 x eSATA connectors 1 x Audio jack supports 6 jacks 6 x USB 2.0 ports 1 x HDMI connectorInternal I/O Connectors: 1 x ATX 24-Pin power connector 1 x 8-pin ATX 12V power connector 1 x 4-pin CPU Fan connectors 2 x 4-pin System FAN connectors 1 x Front pannel header 1 x Intruder header 1 x IDE header 3 x USB 2.0 connectors support additional 6 ports 6 x Serial ATAII connectors 1 x Front Audio Header 1 x S/PDIF Out header 1 x CD-IN header 1 x CLR-COMS header 1 x Speaker headerBIOS Features: 64Mb flash EEPROM w/ LAN boot PnP, ACPI, WfM, DMISupport CD: Drivers, Adobe Reader, SuperUtilities, Norton Internet SecurityStandards/Manageability: PCI 2.3, USB2.0, DMI 2.5Form Factor: ATX (12.0" x 8.6")