This is a USB programming cable with which you can connect your radio and PC to read and write frequency. . USB programming cable for High quality, super stable and efficient. Connect directly to PC or laptop USB port. No RIB(Radio interface box) required. Notice: Before Purchasing, please make sure it fits your transceiver. There's No Programming Software included! Compatible with for Mobile Radio Series:SL300, SL7550, SL7580, SL7550e, SL7580e, SL3500e, EVX-S24 AND Colour:Black Material:Plastic Package Contents: 1 x PMKN4128A Programming Cable(Some labels may have different appearances, which not affect the use) 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.