KKmoon USB ID Portable Card Reader 125Khz EM4305 T5577 Writer Copier Read EM4100 Card with 5PCS Writable Cards 125khz reader/writer with USB interface. Read the EM card inside ID number and write card to EM format. Easy for client to make ID card in serial number and once card is damaged, easy to issue card with same number to end user. Friendly PC software application. Widely used in entrance guard, consumption, hotel lock, and a series of IC card management application system.