T5577/EM4305 are all ID-125KHZ frequency, and the card is empty when leaving the , it can be read after writing, be aware. If the device cannot be connected, do not put the battery when connecting to the computer This machine only supports 125khz, 250khz, 375khz, 500khz, 625khz, 750khz, 875khz, 1M, -125khz, 13.56mhz (ic mode) read and copy, supports most IC encryption card decryption ( not all), does not support Copy CUID and FUID chip cards, do not support cards with power supply Model Number: CD Type: IC Interface: USB color:As shown Material:ABS Package Contents: 1 x ID/IC card duplication machine 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.