The USB2AAEXT20M 20-meter Active USB 2.0 Extension Cable, offers one USB type-A (male) connector and one USB type-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. Up to 2 of these cables can be daisy-chained together, allowing the connection to be extended a total of 40-meters. If necessary, the USB device can be powered from a wall outlet using the Universal AC power Adaptor provided with the cable. The USB2AAEXT20M extension cable (USB Extender) supports transfer rates of up to 480 Mbps, and is backed by StarTech.com's 2-year Warranty. Extends a USB 2.0 device connection by an additional 20m (66 feet) or daisy chain up to 2 levels for 40m (131 feet). USB devices can be powered directly from the USB port or through the included Universal external power adapter. Backed by a StarTech.com 2-year warranty and free lifetime technical support. Extend the distance of USB peripherals beyond the USB 2.0 5-meter limitation. Daisy chain up to 2 cables together. Backward compatible with USB 1.1.