Supports FSB 800/1066/1333 MHz Supports two DIMM DDR3 800/1066/1333* (OC) DRAM 4 SATAII ports & 4 rear USB (Universal Serial Bus) 2.0 ports 7.1 channel audio output CPU Supports Intel Core 2 Quad/ Core 2 Duo based processors in LGA775 package. Supports Intel Yorkfield, Wolfdale in the LGA775 package. Supports Intel next generation 45nm multi-core processors Supports FSB 1333/1066/800 MHz. Supports VRD 11.1 standard. Supports FMB 05a@95W Click Here for compatible CPU list http://www.msi.com/product/mb/G41M-P28.html/?div=CPUSupport Chipset Intel G41 Chipset Supports FSB 800/1066/1333 MHz. Integrated Intel Graphics Media Accelerator (Intel GMA X4500) Supports Microsoft Direct X 10 Intel ICH7 Chipset Hi-Speed USB (Universal Serial Bus) (USB2.0) controller, 480 Mb/sec, up to 8 ports. 4 SATAII ports with transfer rate up to 3 Gb/s. 1 channel Ultra ATA 100 bus master IDE controller. PCI Master v 2.3, I/O APIC. Main Memory Supports two unbuffered DIMM of 1.5 Volt DDR3 800/1066/1333* (OC) DRAM, 8GB Max Slots One PCI Express x 16 slot (PCI Express Bus SPEC V1.0 compliant). Two 32-bit v 2.3 master PCI bus slots. Support 3.3v/5v PCI bus interface. On-Board IDE/SATA One Ultra DMA 66/100 IDE controller integrated in Intel ICH7 Supports PIO, Bus Master operation modes. Can connect up to two Ultra ATA drives. SATAII controller integrated in ICH7 chipset Up to 3 Gb/s transfer speed. Supports four SATAII ports by ICH7 Audio Chipset integrated by VIA VT1708S Flexible 7.1-channel audio Compliant with Azalia 1.0 spec LAN Supports PCI Express LAN 10/100/1000 Fast Ethernet by Atheros AR8131M Internal I/O Connectors ATX 24-Pin power connector 4-pin ATX 12V power connector CPU x 1/ System x 2 FAN connectors CD-in connector Front panel audio connector Front panel connector 1 x chasis intrusion connector 2 x USB (Universal Serial Bus) 2.0 connectors 1 x Floppy disk drive connector 4 x Serial ATAII connectors 1 x ATA100 connector 1 x SPDIF-Out connector Clear CMOS Jumper 1 x Serial port connector 1 x TPM module connector Back Panel I/O Ports 1 x PS/2 keyboard 1 x PS/2 mouse 1 x Parallel port 1 x Serial port 1 x Graphics Card port 4 x USB (Universal Serial Bus) 2.0 ports 1 x RJ45 LAN jack 1 x 6 in 1 audio jack BIOS The mainboard BIOS provides " Plug & Play" BIOS which detects the peripheral devices & expansion cards of the board automatically. The mainboard provides a Desktop Management Interface (DMI) function which records your mainboard specifications. Dimension 24.5cm (L) x 20.0cm (W) M-ATX Form Factor