It's a small size， desktop EM card reader with USB interface. It reads the ID number from EM 4100 card or compatible card. Once card is detected， the card number will be directly sent via USB interface， just like input number from an USB keyboard.

Features:
USB interface， no driver is need.
Reads the EM card inside ID number and sends to PC via USB interface.
The output format can be select by jumper resister.

Specifications:
Color: Black
Material: Plastic
Power Input: USB from PC
Interface: USB， 106bit/s (no extra driver is needed)
Reading Distance: up to 8cm
Frequency: 125KHz
Operation Temperature: -30°C to 60°C
Operation Humidity: 5%-95% Relative Humidity Non-condensing
Audio/Visual Indication: LED and Buzzer Output
Card Number Output Format: 4H8D， 6H8D， etc. (can be selected by inside jumper resister)
USB Cable Length: Approx. 110cm / 43.3in
Card Reader Size: 95 * 61 * 12mm / 3.74 * 2.4 * 0.47in (L * W * H)
Card Reader Weight: 58g / 2.07oz
Package Size: 13.5 * 9 * 3cm / 5.31 * 3.54 * 1.18in (L * W * H)
Package Weight: 86g / 3.04oz

Package List:
1 * Card Reader
1 * ID Card