Awen+ USB Programming Cable for Yaesu Vertex Car Mobile Radio VX-2100 VX-2200 VX-2250 VX-2500 VX-3000 VX-3100 VX-3200 VX-4000 VX-4100 RJ-45 8-pin Used to connect your radio and PC,then write the program setting and frequency of the radio by PC Working PC system: Windows 98/ME/2000/XP/Win7/Win8/Vista For programming Yaesu Vertex Mobile Radios Driver CD included Please contact us if you radio not appeared in compatible list, we will find the correct cable for you