CPU Support for Intel Core™ i7 processors/Intel Core™ i5 processors/ Intel Core™ i3 processors/Intel Pentium processors/Intel Celeron processors in the LGA1155 package (Go to GIGABYTEs website for the latest CPU support list.)L3 cache varies with CPUChipset Intel H67 Express ChipsetMemory 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory* Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.Dual channel memory architectureSupport for DDR3 1333/1066/800 MHz memory modulesSupport for non-ECC memory modules(Go to GIGABYTEs website for the latest supported memory speeds and memory modules.)Audio Realtek ALC889 codecHigh Definition Audio2/4/5.1/7.1-channelSupport for S/PDIF OutLAN 1 x Realtek RTL8111E chip (10/100/1000 Mbit)Expansion Slots 1 x PCI Express x16 slot, running at x16 (PCIEX16)* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.1 x PCI Express x16 slot, running at x4 (PCIEX4)* When the PCIEX1_2 or PCIEX1_3 slot is populated with an expansion card, the PCIEX4 slot will operate at up to x1 mode.3 x PCI Express x1 slots(All PCI Express slots conform to PCI Express 2.0 standard.)2 x PCI slotsMulti-Graphics Technology Support for ATI CrossFireX™* The PCIEX16 slot operates at up to x4 mode when ATI CrossFireX™ is enabled.Storage Interface Chipset: 2 x SATA 6Gb/s connectors (SATA3_0, SATA3_1) supporting up to 2 SATA 6Gb/s devices4 x SATA 3Gb/s connectors (SATA2_2, SATA2_3, SATA2_4, SATA2_5) supporting up to 4 SATA 3Gb/s devicesSupport for SATA RAID 0, RAID 1, RAID 5, and RAID 10* When a RAID set is built across the SATA 6Gb/s and SATA 3Gb/s channels, the system performance of the RAID set may vary depending on the devices being connected.USB Chipset: Up to 12 USB 2.0/1.1 ports (8 on the back panel, 4 via the USB brackets connected to the internal USB headers)Renesas D720200 chip: Up to 2 USB 3.0/2.0 ports on the back panel.Internal I/O Connectors 1 x 24-pin ATX main power connector1 x 8-pin ATX 12V power connector2 x SATA 6Gb/s connectors4 x SATA 3Gb/s connectors1 x CPU fan header2 x system fan headers1 x power fan header1 x front panel header1 x front panel audio header1 x S/PDIF Out header2 x USB 2.0/1.1 headers1 x serial port header1 x clearing CMOS jumperBack Panel Connectors 1 x PS/2 keyboard/mouse port1 x coaxial S/PDIF Out connector1 x optical S/PDIF Out connector8 x USB 2.0/1.1 ports2 x USB 3.0/2.0 ports1 x RJ-45 port 6 x audio jacks (Center/Subwoofer Speaker Out/Rear Speaker Out/ Side Speaker Out/Line In/Line Out/Microphone)I/O Controller iTE IT8728 chipH/W Monitoring System voltage detectionCPU/System temperature detectionCPU/System/Power fan speed detectionCPU overheating warningCPU/System/Power fan fail warningCPU/System fan speed control*Whether the CPU/system fan speed control function is supported will depend on the CPU/system cooler you install. BIOS 2 x 32 Mbit flashUse of licensed AWARD BIOSSupport for DualBIOS™PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0bUnique Features Support for @BIOSSupport for Q-FlashSupport for Xpress BIOS RescueSupport for Download CenterSupport for Xpress InstallSupport for Xpress Recovery2Support for EasyTune* Available functions in EasyTune may differ by motherboard model.Support for Dynamic Energy Saver™ 2Support for Smart 6™Support for Auto GreenSupport for eXtreme Hard Drive (X.H.D)Support for ON/OFF ChargeSupport for Cloud OCSupport for Q-ShareBundle Software Norton Internet Security (OEM version)Operating System Support for Microsoft Windows 7/Vista/XPForm Factor ATX Form Factor; 30.5cm x 21.5cm