Deftun MSR90 is hand swipe operated magnetic card reading machine with USB interface, adopting high integrated magnetic card decoding chip. They have small electricity consumption and strong interference resistance. NO Software required ! USB Simply plug and play (Keyboard Emulation). Reader works like a keyboard, any windows can be show the card data like TXT, Word, Excel or any software, system. Perfect for laptops/notbooks, desktop computers, credit card proessing, point of sale (POS), access control, ID verification, time and attendance terminals, etc.