This is a USB ID Card Reader device is a simple， easy to use， stable， low-cost， high performance and practical to read 125KHz non-contact ID card. This reader can read RFID， ID card. It is easy to use， just plug and play by USB interface. Features: Support uem 4100， or its compatible RFID， ID card. (If you need USB IC card reader， please feel free to contact with us). Frequency: 125Khz Read first 10 digits of the RFID/Proximity card. Support Windows 95/98/2000/XP Communication speed: 106Kbit/s Power: DC 5V(+/-5%) Reading distance: 5-8cm Interface: USB Size: 10.8 x 7.8 x 2.8cm Color: Black Package Content: 1 x USB ID Card Reader 1 x USB Cable (Note : Photo attached is for reference only， it may be slightly varied in items of colour， shape from the actual item delivered from time to time)