The 990FXA-D3 motherboard is designed to offer a stable, high-speed platform for delivering amazingly fast data transfer via the GIGABYTE 333 onboard acceleration technologies. Featuring the USB3.0 controller, AMD 900 series motherboard allows users to take advantage of super fast USB (Universal Serial Bus) transfer rates of up to 5 Gbps, delivering 10x faster data transfer compared to USB (Universal Serial Bus) 2.0. Utilizing the serial ATA revision 3.0 solution via AMD chipset, GIGABYTE AMD 900 series motherboard offers native 6 ports of high speed data storage devices support with data transfer speeds of up to 6 Gbps with RAID 0, 1, 5, 10. The AMD 900 series motherboard introduces a unique hardware design with lower resistance fuses for ensuring lower voltage drops & providing more stable & plentiful power delivery. All USB (Universal Serial Bus) ports also benefit from a 3x power boost for better power delivery to power hungry USB (Universal Serial Bus) devices. CPU AM3+ Socket: Support for AMD AM3+ FX processors Support for AMD AM3 Phenom™ II processors / AMD Athlon™ II processors (Please refer "CPU Support List" for more information.) Hyper Transport Bus 5200 MT/s Chipset North Bridge: AMD 990X South Bridge: AMD SB950 Memory 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory (Note 1) Dual channel memory architecture Support for DDR3 2000 (O.C.)/1866/1600/1333/1066 MHz memory modules (Note 2) (Please refer " Memory Support List" for more information.) Audio Realtek ALC889 codec High Definition Audio 2/4/5.1/7.1-channel Support for Dolby Home Theater Support for S/PDIF Out LAN 1 x Realtek RTL8111E chip (10/100/1000 Mbit) Expansion Slots 1 x PCI Express x 16 slot, running at x 16 (PCIEX16) (Note 3) 1 x PCI Express x 16 slot, running at x 8 (PCIEX8) (Note 4) 1 x PCI Express x 16 slot, running at x 4 (PCIEX4) 2 x PCI Express x 1 slots (All PCI Express slots conform to the PCI Express 2.0 standard.) 2 x PCI slots Multi-Graphics Technology Support for AMD Cross Fire X™ & NVIDIA SLI™ technology (PCIEX16 & PCIEX8) (Note 5) Storage Interface South Bridge: 6 x SATA 6 Gb/s connectors supporting up to 6 SATA 6 Gb/s devices Support for RAID 0, RAID 1, RAID5, RAID 10 & JBOD USB (Universal Serial Bus) South Bridge: Up to 14 USB (Universal Serial Bus) 2.0/1.1 ports (8 ports on the back panel, 6 ports available through the internal USB (Universal Serial Bus) headers) 2 x Etron EJ168 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) header) 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 1 x CPU fan header 2 x system fan headers 1 x power fan header 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 Trusted Platform Module (TPM) header 1 x serial port header 1 x clearing CMOS jumper Back Panel Connectors 1 x PS/2 keyboard/mouse port 1 x optical S/PDIF Out connector 1 x IEEE 1394 port 8 x USB (Universal Serial Bus) 2.0/1.1 ports 2 x USB (Universal Serial Bus) 3.0/2.0 ports 1 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 IT8720 chip H/W Monitoring System voltage detection CPU/ System temperature detection CPU/ System/ Power fan speed detection CPU overheating warning CPU/ System/ Power fan fail warning CPU/ System fan speed control (Note 6) BIOS 2 x 32 Mbit flash Use of licensed AWARD BIOS Support for Dual BIOS™ Pn P 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b 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 (Note 7) Support for Easy Energy Saver Support for Smart Recovery Support for Auto Green Support for ON/OFF Charge Support for Cloud OC 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 ATX Form Factor; 30.5cm x 24.4cm Note (Note 1) 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. (Note 2) To support a DDR3 1866 MHz (and above) memory, you must install an AMD AM3+ CPU first. (Note 3) For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. (Note 4) The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x 8 mode. (Note 5) The PCIEX16 slot operates at up to x 8 mode when AMD Cross Fire X™ is enabled. (Note 6) Whether the CPU/system fan speed control function is supported will depend on the CPU/system cooler you install. (Note 7) Available functions in Easy Tune may differ by motherboard model.