DigiScan Ultra USB CAC Smart Card Reader (DOD Compatible) 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. Compatible with Mac OS X, Windows 7, 8, Vista, 2003-2008 (32/64 bit) Compliant with major smart cards and relevant industry standards 1 Year manufacturer's warranty