As you may have noted that normal USB standard limits the maximum total length of a usb cable to a certain limit length which lost power may occur and the device will not power up if longer than that... Here, This active USB come to solve your problem. This USB 2.0 is an A Male to A Female bus-powered extension cable which can increase the length capability of an USB device without worrying about signal loss. You can now extend your your USB device at longer length (example high power wifi adapter) to put near outdoor and get better signal without worrying signal lost. Besides, with this female extension cable, youll never have to struggle with cables that are too short while connecting your printer, scanner, drive, or adapter and etc... Features: Brand by Akiba-Accessories Compliant with USB 2.0, backwards compatible as they can carry a USB 1.0 and 1.1 signal The USB extension cable is used to connect devices such as digital cameras, digital video cameras, scanners, printers, web cams, mice, keyboards, joysticks, network connections, etc. Keep this USB extension cable, to use at the office or any situation where there is a lack easy USB access Plug-and-play ,no additional drivers required Support 2000/XP/Vista, Mac OS Length : 5m Package Content: 1 X USB Extension Cable (Note : If you repeat this cable up to 25m (by series connecting up to 5 segments), the voltage will be declined gradually. So, when the power is lower than 2W, please offer external power supply to the device to run itNote : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time)