The board will have 4x 240-pin DDR2 SDRAM DIMM sockets. it supports up to 1.8v DDR2-667/800/1066 DIMMs with dual channel architecture. It also support single-sided or double-sided, non-ECC, DIMMs with 256Mb/512Mb/1Gb/2Gb devices with a max of 8GB of system memory
The board comes with two PCI connectors compliant with PCI v2.3
One PCI-Express (x4) connectors compliant with PCI Express 1.0a #1
One PCI Express (x16) connector compliant with PCI Express 2.0a #2
One PCI Express (x8) connector for extra PCI-E VGA in GLI (Graphics Link Interface) mode #3
(#1: The PCI-E X16 Slot works in PCI-E X4 Mode
#2,#3: Two PCI-E X16 Slots may work in PCI-E G2 “X16+X0” or “X8+X8” Mode )
In terms of expansion, it has 12 USB connectors compliant with USB2.0 from embedded USB controller (6 connectors at rear panel). SATA wise, it has six S-ATA II ports with up to 300MB/s bandwidth from ICH10R, Support intel Matrix Raid 0,1,)+1,5 (AP45+ GTR). Two SATAII port with up to 300MB/s bandwidth from enhanced JMB363, Support JMB Raid0,1. There is also a PATA channel supported by the Jmicron controller JMB363.
http://my.ocworkbench.com/2008/supox/AP45+GTR/g1.htm