Specifications USB HOST INTERFACE Protocol : USB HID Keyboard Class Connector Type : Standard Type A Power source : From USB port Speed : USB Full Speed (12Mbps) Supply Current : 5V Supply Current : Max.200 mA Cable Length : 2.0m, Fixed CONTACTLESS SMART CARD INTERFACE Standard : ISO 14443 A and B Parts 1-4 Protocol : ISO 14443 T=CL for ISO 14443.4-compliants cards T=CL Emulation For MIFARE Classic Operating Distance : Up to 50mm (depending on card type) Smart Card Read/Write Speed : 106 Kbps, 212 Kbps, 424 Kbps, 848 Kbps Antenna Size : 65mm x 60mm PHYSICAL CHARACTERISTICS Dimensions : 120.5mm (L) 72.0 mm (w) X 20.4 mm (H) Weight : 140 g Color : Black BUILT-IN-PERIPHERALS LED : 2 single-color : Red and Green Buzzer : Monotone