TECH SPECS:-

Processors
LGA775 for Intel ® Core 2 Quad, Core 2 Duo, P4, P4EE, Pentium D, Pentium XE
Chipset
Nvidia nForce 680 SLI
Chipset
NVIDIA ® nForce 590i SLI MCP (MCP55XE)
The frequency
1333 Mhz
memory
4 x DDR2 SDRAM; Channels 2
Maximum RAM
16 GB
RAID Controller
1 x RAID
Connector nutrition
24-cont. ATX power supply connector 8 - control. a power ATX 12 V
Embedded video
No
Embedded Audio
8-channel HDA, audio codec Realtek ® Sound Blaster X-Fi Xtreme.
External connectors.

4 x USB 2.0, 1 x RJ-45 LAN, 1 x LPT, 1 x COM, 1 x IEEE1394, 1x optical / coaxial S / PDIF-out, 1 x eSATA, 2 x PS / 2, audio (Front-out, rear-out, sub / senter-out, line-in, mic-in)
Expansion cards
4 x PCI-Express x16 (supported by the tire PCI Express v1.0a), 1 x PCI-Express x1, 2 x PCI v2.3 32-bit Bus Master (support 3.3v/5v interface for PCI)
Physical size
305 x 245 mm.