CPU Support for Intel Core™ i 7 processors in the LGA2011 package L3 cache varies with CPU (Please refer "CPU Support List" for more information.) Chipset Intel X79 Express Chipset Memory 8 x 1.5V DDR3 DIMM sockets supporting up to 64 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. 4 channel memory architecture Support for DDR3 2133/1866/1600/1333/1066 MHz memory modules Support for non-ECC memory modules Support for Extreme Memory Profile (XMP) memory modules (Please refer " Memory Support List" for more information.) Audio Realtek ALC898 codec High Definition Audio 2/4/5.1/7.1-channel Support for Dolby Home Theater Support for S/PDIF Out LAN 1 x Intel Gb E LAN (10/100/1000 Mbit) Expansion Slots 2 x PCI Express x 16 slots, running at x 16 (PCIEX16_1/PCIEX16_2) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 & PCIEX16_2 slots. 1 x PCI Express x 16 slot, running at x 8 (PCIEX8) (All PCI Express x 16 slots conform to PCI Express 3.0 standard.) 2 x PCI Express x 1 slots (All PCI Express x 1 slots conform to PCI Express 2.0 standard.) 1 x PCI slot Multi-Graphics Technology Support for 3-Way/2-Way AMD Cross Fire X™ / NVIDIA SLI technology. Storage Interface Chipset: 2 x SATA 6 Gb/s connectors (SATA3 0/SATA3 1) supporting up to 2 SATA 6 Gb/s devices 4 x SATA 3 Gb/s connectors (SATA2 2~SATA2 5) supporting up to 4 SATA 3 Gb/s devices Support for RAID 0, RAID 1, RAID 5, & RAID 10 * When a RAID set is built across the SATA 6 Gb/s & SATA 3 Gb/s channels, the system performance of the RAID set may vary depending on the devices being connected. 3 x Marvell 88SE9172 chips: 4 x SATA 6 Gb/s connectors (GSATA3 6~GSATA3 9) supporting up to 4 SATA 6 Gb/s devices 2 x e SATA 6 Gb/s connectors (including 1 e SATA/USB Combo) on the back panel supporting up to 2 SATA 6 Gb/s devices Support for SATA RAID 0 & RAID 1 USB (Universal Serial Bus) Chipset: Up to 14 USB (Universal Serial Bus) 2.0/1.1 ports (8 ports on the back panel, including 1 e SATA/USB Combo, 6 ports available through the internal USB (Universal Serial Bus) headers) 2 x Fresco FL1009 chips: Up to 4 USB (Universal Serial Bus) 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB (Universal Serial Bus) headers) IEEE 1394 VIA VT6308 chip: Up to 2 IEEE 1394a ports (1 port on the back panel, 1 port available through the internal IEEE 1394a header) Internal I/O Connectors 1 x 24-pin ATX main power connector 1 x 8-pin ATX 12V power connector 6 x SATA 6 Gb/s connectors 4 x SATA 3 Gb/s connectors 1 x CPU fan header 4 x system fan headers 1 x front panel header 1 x front panel audio header 1 x S/PDIF Out header 3 x USB (Universal Serial Bus) 2.0/1.1 headers 1 x USB (Universal Serial Bus) 3.0/2.0 header 1 x IEEE 1394a header 1 x Clear CMOS jumper 1 x Trusted Platform Module (TPM) header Back Panel Connectors 1 x PS/2 keyboard/mouse port 1 x CPU overclocking button 1 x BIOS switch button 1 x Clear CMOS button 1 x IEEE 1394 port 7 x USB (Universal Serial Bus) 2.0/1.1 ports 2 x USB (Universal Serial Bus) 3.0/2.0 ports 1 x e SATA/USB Combo connector 1 x e SATA 6 Gb/s connector 1 x RJ-45 port 1 x optical S/PDIF Out connector 5 x audio jacks (Center/ Subwoofer Speaker Out, Rear Speaker Out, Side Speaker Out, Line In/ Mic In, Line Out) I/O Controller i TE IT8728 chip H/W Monitoring System voltage detection CPU/ System temperature detection CPU/ System fan speed detection CPU overheating warning CPU/ System fan fail warning CPU/ 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 64 Mbit flash Use of licensed AMI EFI BIOS Support for Dual BIOS™ Pn P 1.0a, DMI 2.0, SM BIOS 2.6, ACPI 2.0a Unique Features Support for @BIOS Support for Q-Flash Support for Xpress BIOS Rescue Support for Download Center Support for Xpress Install Support for Xpress Recovery 2 Support for Easy Tune * Available functions in Easy Tune may differ by motherboard model. Support for Smart 6™ Support for e Xtreme Hard Drive (X.H.D) Support for ON/OFF Charge Support for Cloud OC Support for Touch BIOS Support for 3TB+ Unlock Support for Q-Share Bundle Software Norton Internet Security (OEM version) Operating System Support for Microsoft Windows 7/ Vista/XP Form Factor E-ATX Form Factor; 30.5cm x 26.4cm