DigiScan USB CAC Smart Card Reader Desk Version (DOD Compatible) CAC USB Smart Card Reader Compatible with Mac OS X, Windows 7, 8,10 Vista, 2003-2008 (32/64 bit) Reads All Common Access Cards Including US Government, Army, Air Force, Navy, Marines, National Guard, Reserves etc. CAC Cards Small, Portable, easy to carry around. sleek and ergonomic built.