This product has a gray 4pin arrange interface , that extends USB functionality. Compatible with some for Kia for Hyundai original radio types (with 4pin expansion module) Original plug, original wiring harness (with Shield noise) The main function of the product is USB data transmission and MP3 music playback Please compare the interface types before purchasing. Similar interfaces from Peugeot are not compatible Applied to original car radios with USB expansion module, compatible with 4pin jack type, multimedia function