Review on 25Ft USB 3.0 Extension Cable - Tan QY High-Speed Extender Cord for Playstation, Xbox, USB Flash Drive, Hard Drive, Card Reader, Scanner, Printer, Keyboard by Sean Copeland

I bought 2 of the 20ft cords, they looked good and seemed to be of decent quality but none of them carried enough voltage to power devices I had connected through them . I've tried using them with a mouse and keyboard on my PC's USB 2.0 and USB 3.0 ports. The PC recognizes that something is plugged in, but can't tell what's plugged in, so it doesn't install or select the correct drivers. Neither device lit up to indicate it had enough power to run. I find the impedance of these cables to be too high for 20 feet, and they just won't work without an active (externally powered) USB cable. The devices worked perfectly when plugged into the same PC ports without using these USB extenders. Sent back for a refund.