*CPU AMD AM3+ FX™/Phenom™ II/Athlon™ II/Sempron™ 100 Series Processors Supports AM3+ 32 nm CPU Supports CPU up to 8 cores Supports CPU up to 140 W AMD Cool 'n' Quiet™ Technology *Chipset AMD 990X/SB950 *Memory 4 x DIMM, Max. 32GB, DDR3 2133(O.C.)/1866/1600/1333/1066 Hz ECC, Non-ECC, Un-buffered Memory Dual Channel Memory Architecture Refer to www.asus.com or user manual for the Memory QVL (Qualified Vendors Lists). Due to OS limitation, when installing total memory of 4GB capacity or more, Windows® 32-bit operation system may only recognize less than 3GB. Install a 64-bit Windows® OS when you want to install 4GB or more memory on the motherboard. Due to CPU spec., AMD 100 series CPUs support up to DDR3 1066MHz. With ASUS design, this motherboard can support up to DDR3 1333MHz. System Bus Up to 5.2 GT/s HyperTransport™ 3.0 Multi-GPU Support Supports NVIDIA® Quad-GPU SLI™ Technology Supports AMD Quad-GPU CrossFireX™ Technology *Expansion Slots 2 x PCIe 2.0 x16 (x16 or dual x8) 1 x PCIe 2.0 x16 (x4 mode, black) 2 x PCIe 2.0 x1 1 x PCI *Storage AMD SB950 controller : 6 x SATA 6Gb/s port(s), gray Support Raid 0, 1, 5, 10 JMicron® JMB362 controller : 2 x SATA 3Gb/s port(s), black 1 x Power eSATA 3Gb/s port(s), green 1 x eSATA 3Gb/s port(s), red *LAN Realtek® 8111E , 1 x Gigabit LAN Controller(s) *Audio Realtek® ALC 892 8-Channel High Definition Audio CODEC - Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking Audio Feature : - Absolute Pitch 192kHz/ 24-bit True BD Lossless Sound - DTS Surround Sensation UltraPC - ASUS Noise Filter - Optical S/PDIF out port(s) at back panel *IEEE 1394 VIA® 6308P controller 2 x IEEE 1394a port(s) (1 at mid-board, 1 at back panel) *USB Ports ASMedia® USB 3.0 controller : 4 x USB 3.0 port(s) (2 at back panel, blue, 2 at mid-board) AMD SB950 controller : 14 x USB 2.0 port(s) (8 at back panel, black+red, 6 at mid-board) *Overclocking Features Overclocking Protection : - ASUS C.P.R.(CPU Parameter Recall) *Special Features ASUS Dual Intelligent Processors 2 with DIGI+ VRM : ASUS TPU : - Auto Tuning - TurboV - TPU switch ASUS EPU : - EPU - EPU switch ASUS Digital Power Design : - Industry leading Digital 6 +2 Phase Power Design - ASUS DIGI+ VRM Utility ASUS Exclusive Features : - MemOK! - AI Suite II - Ai Charger+ - Front Panel USB 3.0 Support - ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface ASUS Quiet Thermal Solution : - Stylish Fanless Design Heat-pipe solution - ASUS Fan Xpert ASUS EZ DIY : - ASUS Q-Shield - ASUS O.C. Profile - ASUS EZ Flash 2 - ASUS MyLogo 2 - Multi-language BIOS ASUS Q-Design : - ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED) - ASUS Q-Slot - ASUS Q-DIMM - ASUS Q-Connector Back I/O Ports 1 x PS/2 keyboard/mouse combo port(s) 1 x eSATA 3Gb/s 1 x Power eSATA 3Gb/s 1 x IEEE 1394a 1 x LAN (RJ45) port(s) 2 x USB 3.0 8 x USB 2.0 1 x Optical S/PDIF out 6 x Audio jack(s) *Internal I/O Ports 1 x USB 3.0 connector(s) support(s) additional 2 USB 3.0 port(s) (19-pin, blue) 3 x USB 2.0 connector(s) support(s) additional 6 USB 2.0 port(s) 1 x COM port(s) connector(s) 6 x SATA 6Gb/s connector(s) 2 x SATA 3Gb/s connector(s) 1 x IEEE 1394a connector(s) 1 x CPU Fan connector(s) (4 -pin) 3 x Chassis Fan connector(s) (1 x 4 -pin, 2 x 3 -pin) 1 x Power Fan connector(s) (1 x 3 -pin) 1 x S/PDIF out header(s) 1 x 24-pin EATX Power connector(s) 1 x 8-pin ATX 12V Power connector(s) 1 x Front panel audio connector(s) (AAFP) 1 x System panel(s) (Q-Connector) 1 x MemOK! button(s) 1 x TPU switch(es) 1 x EPU switch(es) 1 x Clear CMOS jumper(s) *Accessories User's manual I/O Shield 4 x SATA 6Gb/s cable(s) 1 x SLI bridge(s) 1 x Q-connector(s) (2 in 1) *BIOS 32 Mb Flash ROM, UEFI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.6, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2 *Manageability WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE *Support Disc Drivers ASUS Utilities ASUS Update Anti-virus software (OEM version) *Form Factor ATX Form Factor 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )