StarTech.com USB 2.0 Active Extension Cables - M/F - StarTech.com USB2AAEXT20M, The StarTech.com USB2AAEXT20M 20m Active USB 2.0 Extension Cable offers 1 x USB A male connector and 1 x USB A female connector, providing an active extension for USB 2.0 devices of up to 10m. The active USB 2.0 extension cable is an all-in-one cable for overcoming distance and power source limitations. It incorporates bus-powered active circuitry to ensure performance beyond the length limits of standard USB cables. Up to 4 x of these cables can be daisy-chained together, allowing for a total USB extension of up to 40m. If necessary, the USB device can be powered from a wall outlet using the provided Universal AC power adaptor.Backed by StarTech.com\'s 2-year Warranty. StarTech USB2AAEXT20M 20m USB 2.0 Active Extension Cable - M/F