MSR90 is a USB emulation keyboard interface that not need any driver or software,USB simply plug and play | Reads up to 3 tracks of information,can reads ISO7811, AAMVA, CA DMV and most other card data formats | Threaded inserts for mounting. LED indicator, green light is on when connecting,green light blinks when cards swiped | Bi-directional swipe reading, superior reading of high jitter, scratched, and worn magstripe cards, reliable for over 1,000,000 card swipes | Configuration software makes configuration changes easy,works with: Windows OS and Mac OS, or many other USB capable operating systems