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.
Plugged the cable to my tower and windows 7 loaded the drivers for it and the cable has been working flawlessly running my printer. with the boost from the active device built in there is no loss of speed to the printing process. This is an excellent product and I would recommend this particular cable to anyone that needs an extended connection. Great company , they sell a great product.