Retevis 2 Pin USB Programming Cable Lead for Baofeng UV5R 888S H777 RT5R Puing Wouxun TYT Kenwood 2 Way Radios Walkie Talkies (1 Pack) Space of two-pin 11mm; Length 100cm; Two-pin standard diameter ear 3.5mm stereo of top pin; Mic 2.5mm stereo of bottom pin Newest Version Support Windows 7 64 Bit This item is the cable that using to connect your Radio and PC then write the program setting and frequency of the walkie-talkie by PC If for some reason your operating system cannot install the correct drivers automatically;the CD is provided as an alternative Simple and Convenient return process; 60 days warranty provide by us and 30 days no reason to return