Why not get one of the Zotac IONITX boards and stick it in the M350 case like I did?
would you like please show qvdpautest results for zotzc ionitx
Fanless, low power, and OS can be installed on SSD,
usb flash stick, Microdrive, SD(HC), CF, you name it. They all have usb adapters so that way your system will remain totally silent.