The Express-ATR is scheduled for discontinuation as of 12-31-2013. And has been replaced by the Express LPC.
The Express-ATR is an exceptionally high integration, high performance, rugged Intel Atom N270 processor based system compatible with the COM Express standard. This rugged and high quality module system contains all the component subsystems of an ATX motherboard plus the equivalent of several PCI expansion boards.
The Intel 945GSE chipset provides controllers for the 82945GSE Graphics and Memory Hub (Northbridge, GMCH) and the 82801GBM I/O Hub (Southbridge, ICH7M) and provides eight USB ports, two SATA ports, eight GPIO ports, one Ultra DMA 33/66/100 IDE controller supporting two IDE drives, and one Gigabit Ethernet interface (external magnetics required). The Express-ATR also supports up to 2GB of onboard SODIMM memory and a graphics controller, included in the Northbridge, which provides CRT and LVDS flat panel video interfaces for most LCD panels.