When the computer is connected, a disk with software is displayed. Do not insert the battery while connecting to the computer; wait for the disk to be recognized before proceeding. This product is not suitable for bank cards. It cannot write to electronic label stickers or electronic label cards. If the device fails to connect, do not insert the battery when connecting to the computer. Powered by 4 x AAA batteries (not included); compact and portable design. Supports decoding and direct programming of smart cards for access control systems. How to read and write standard RFID cards: 1. Press the “On/Off” button. 2. Place the card on the back of the device. The display will show “Page OK”. 3. Place the card on the back of the device again and select “Scan”. 4. The device scans the card and displays the card number. Color: Creamy white Material: Plastic Due to variations between production batches, slight differences in appearance, color, or printed text may occur; these do not affect functionality. Accessories may vary in color and appearance; no specific color or style requests accepted. Includes 5 x UID cards. Package contents: 1 x Smart Card Reader Kit Other items are not included. Note: Color representation may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.