The M1255 follows the same basic design as previous MCAs with the built-in handle for carrying and rugged design to resist spills and tumbles. Fully sealed with no vents, so it must run a highly efficient processor, in this case Intel Atom 1.6GHz N270. No mention of OS, but we know Windows can run on Intel Atom.

http://www.arbor.com.tw/products/third.aspx?fid=2&sid=1

http://www.arbor.com.tw/about/20090705.aspx