И в формате 3.5" Атом подошел
Commell LE-374
http://www.commell.com.tw/Product/SBC/LE-374.HTM
Intel® Atom N270 processor @ 533 MHz FSB
DDR2 400/533 MHz up to 2.0 GB.
VGA, LVDS, DVI, HDTV
2xSATA
Intel® 82574L Gigabit Ethernet
Realtek ALC655 5.1 ch Audio.
Onboard 8-bit Digital I/O interface.
1 x Mini-PCI socket, 1xCompactflash socket
Full range DC 9V ~ 24V input (8 ~ 30V is operative)