http://www2.abit.com.tw/page/e…YPE=Socket+939&DEFTITLE=Y
CPU
* Socket 939 for AMD Athlon 64X2/ 64FX/ 64 Processors with 2000MT/s System Bus
* AMD CPU Cool 'n' Quiet Technology
Chipset
* ATI RD480 Radeon Xpress 200 chip
* ULI 1575 SB chip
* 4 Lanes PCI Express interface between NB and SB
Memory
* Four 184-pin DIMM sockets
* Supports dual channel DDR400 ECC/non-ECC un-buffered memory
* Supports maximum memory capacity up to 4GB
Graphic
* Two PCI-Express X16 slots support Dual Graphic card by ATI CrossFire™ Technology
ABIT Engineered
* ABIT Silent OTES™ Technology
* ABIT µGuru™ Technology
* ABIT vGuru™ Link Technology
Serial ATA
* 4 x SATA 3Gb/s RAID 0/1/0+1/5
* Supports SATA AHCI, providing native command queuing and native hot plug
LAN
* On board 10/100/1000M PCI controller
IEEE1394
* Support IEEE 1394 at 400 Mb/s transfer rate
Audio
* On board 7.1 CH HD Audio CODEC
* Auto Jack Sensing and optical S/P DIF In/Out
Expansion Slots
* 2 x PCI Express X16
* 2 x PCI Express X1
* 2 x PCI slots
Internal I/O Connectors
* Floppy Port supports up to 2.88 MB
* 2 x Ultra DMA 133/100/66/33 IDE Connectors
* 4 x SATA Connectors
* 2 x USB headers, 1 x IEEE 1394 header
Back Panel I/O
* 1 x PS/2 Keyboard, 1 x PS/2 mouse
* Silent OTES, 1 x S/P DIF In, 1 x S/P DIF Out
* 7.1 CH Audio connector (Front, Line-in, MIC-in, Center/Subwoofer, Surround, Rear Surround)
* 4 x USB, 1 x RJ-45 LAN Connector, 1 x IEEE 1394
Form Factor
* ATX form factor 305 x 245mm