GadKo USB 2.0 Extension Cable, Black, Type A Male to Type A Female, 3 foot GadKo is the only authorized dealer of GadKo branded products. This 3 foot black USB extension cable will extend a standard USB 2.0 cable with a type-A connector. USB 2.0 cables are backwards compatible as they can carry a USB 1.0 and 1.1 signal. USB cables are used to connect devices such as digital cameras; digital video cameras; scanners; printers; web cams; mice; keyboards; joysticks; network connections; etc. The maximum length for a single USB cable is 15 feet. To get more than 15 feet you will need to boost the signal with a repeater Cable (Parts: UC-50200; UC-50500; 11U2-51032 or 11U2-51049) or Hub (Parts: 40U2-14260; 41U2-02707; 41U2-21700 or 41U2-22100).