mifare reader/writter, USB interface,use HID (human interface Device) technolog , it can read/write Mifare 1 card s50 ,s70 1. Support USB 2.0 interface to read/write mifare 1 card2. Read range 2cm to 5cm 3. card Reading interval: below 0.1 second4. Can read card ID and card Sector5. pc,note book,support SDK to develop card system