The USB2AAEXT20M 20m Active USB 2.0 Extension Cable offers one USB-A male connector and one USB-A female connector, and provides an active extension of USB 2.0 devices of up to 20-meters (66-feet).An all-in-one cable for overcoming distance restrictions as well as power source limitations, the active USB 2.0 extension cable incorporates bus-powered active circuitry to ensure performance beyond the length limits of standard USB cables. Plus you can daisy chain 2 cables for a total USB extension of up to 40-meters.If necessary, the USB device can be powered from a wall outlet using the Universal AC power adapter (provided with the cable).The USB2AAEXT20M repeater cable supports the full USB 2.0 bandwidth of 480 Mbps.