The key is model N
These ship with Ubuntu. The ones we purchased last year shipped with Free DOS.
As I mentioned Friday, the BIOS is tweaked so OEM versions of Windows and Upgrade versions of Windows will not allow registration.
Don Bosman
Information Technologist
MSU Libraries
366 W. Circle Drive - Rm.W441
East Lansing, MI 48824-1048
517-884-0873