Works out of the box on pc. I did what you may be doing now. You get two cables with them. Pensé que sería un poco incómodo pero al contrario el material es muy bueno. I would not purchase again because of this. You would think that a Thule product would have a strong finish to last I hope this is not there Thule starts to penny pinch on their quality. They stayed on perfectly. OK, look, these Nike are lightweight, well made, comfy AF, but I have to say, for me, they a narrow fitting. Mind you, this was my FIRST experience w/ this type cable. Our 8, 10 and 13 year old love this one.