... 56 MHz, 110 x 80 x 25 mm 2 .USB 2.0 interface, plug and play 3. Support IEC ... Size50 mm x 40 mmCable length1.0 meter USB cable2.RFID FeaturesOperating Frequency:13 ... 23. ElectricalPower sourceFrom USB, 5V/ 100 mAInterfaceUSB 2.0, 12 MbpsSupply currentmax :200 mAstandby :50 mAnormal :100 ... GreenBuzzerMonotone4. OS supportWindows XP, Vista ,Windows 7, Linux and Mac OS6. card Support IEC14443 ...