This is a USB programming cable with which you can connect your radio and PC to read and write frequency..USB programming cable forHigh 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 ANDColour:BlackMaterial:PlasticPackage 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.