You need a K1-Plug (2-pin) USB programming cable. This is the same style used by Kenwood and Baofeng radios.
software if they encounter connection issues with the factory version. RadioReference.com Forums Essential Requirements for Programming USB Programming Cable: Free Download Software Ht Weierwei Vev 3288s
Sometimes manufacturers go out of business or remove old downloads. Your options: You need a K1-Plug (2-pin) USB programming cable