Processor: Intel Core™ i7,Core™ i5 processors, Socket LGA1156 Chipset: Intel P55 Front Side Bus: 2.5GT/s DMI Memory: Dual channel DDR3 1333/1066 x 4 DIMMs, Max. 16GB VGA on Die: N/A Expansion Slots: 1* PCIe2.0 x16, 1* PCIe x4,1* PCIe x1, 3* PCI IDE: N/A Serial ATA(SATA)/RAID: 6* SATAII w / RAID 0, 1, 5, 10; Intel Matrix storage technology Audio: 7.1 channel HDA LAN: Gigabit Lan IEEE1394: N/A Back Panel I/O Ports: 1 x PS/2 keyboard port 1 x S/PDIF out Optical port 1 x RJ45 LAN port 1 x Audio jack supports 6 jacks 8 x USB 2.0 ports Internal 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 Front Audio Header 1 x Intruder Alarm header 3 x USB 2.0 connectors support additional 6 ports 6 x Serial ATAII connectors 1 x S/PDIF Out header 1 x CD_IN connector 1 x IrDA header 1 x Speaker header BIOS Features: 16Mb flash EEPROM w/ LAN boot PnP, ACPI, WfM, DMI Support CD: Drivers, Adobe Reader, SuperUtilities, Norton Internet Security Standards/Manageability: PCI 2.3, USB2.0, DMI 2.5 Form Factor: ATX (12" x 8.4")