When the computer is connected, a disk is displayed with software on it (Do not insert the battery when connecting to the computer; wait for the disk to respond and do not press OK). This product is not suitable for bank cards. Cannot write electronic label stickers or electronic label cards (NTAG 213). If the device cannot be connected, do not insert the battery when connecting to the computer. Powered by 4xAAA batteries, standard handset design, easy to carry (batteries not included). Includes decoding function for direct preparation of various types of smart card access doors. How to read and write normal RFID cards? 1. Press the "on/off" button. 2. Place the card on the back of the copier. The device will display the "Warning" page. Press "OK". 3. Place the card on the back side of the copier and press "scan". 4. The copier will scan and display the card number. Due to different production batches, there may be variations in product appearance, color, and printed text; these differences do not affect functionality. Color: Black Material: Plastic Package Contents: 1 replicator kit with data cable (accessory color and appearance are random; specific color or appearance requests cannot be accommodated) Only the items listed above are included; other products are not included. Note: Lighting effects and monitor settings may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3 cm.