Make sure software isn't limiting USB voltage
I bought this to connect a web cam on a wall to a computer a good distance away. Initially it wasn't working and I was blaming the cable, but it turned out not to be the cable's fault at all. Turns out I had software with a defect that limited the voltage available on the USB bus. Once I corrected that issue, the cable worked fine. I would like if there was an indicator light on the female end to prove that power is getting down the line.