T5577/EM4305 are all ID-125KHZ frequency, and the card is empty when leaving the factory, it can be read after writing, please be aware.If the device cannot be connected, please do not put the battery when connecting to the computerThis machine only supports 125khz, 250khz, 375khz, 500khz, 625khz, 750khz, 875khz, 1M, -125khz, 13.56mhz (ic mode) read and copy, supports IC encryption card decryption (but not all), does not support Copy CUID and FUID chip cards, do not support cards with supply Number: CDType: ICInterface: USBcolor:As shownMaterial:ABSPackage Contents:1 x ID/IC card duplication machine1 x USB cableOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.