When the computer is connected, a disk is displayed with software on it(Do not put the battery in when connecting the computer, wait for the disk to respond, do not ok) This product is not suitable for bank cards! ! Cannot write electronic label stickers and electronic label cards( 213) If the device cannot be connected, please do not put the battery when connecting to the computer Working with 4*AAA battery, standard handset, easy to carry. (not included) Comes decoding, direct preparation of types of smart card access door. Colour:Creamy white Material:plastic style:With 5xUID keychain + 5xCUID keychain How to read and write normal RFID cards? 1. the "on/off " button. 2. Put the cards on the back of the copier. The copier be show the "" page. "ok" 3. Put the cards on the back side of the copier and "scan" 4. The copier scan and show the card number. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 *