This Max Value USB2.0 active extension cable is ideal for increasing the distance between your device and your keyboard. This cable contains active electronics which boost the USB signal for maximum reliability and performance over extended distances.This USB active extension cable requires no additional power supply or special installation. Simply plug the cable into an available USB port and connect it to the end USB 2.0 device.The specification for USB states that the maximum length of a USB cable is 5 metres. As a result, you cannot extend the distance of your USB device more than 5 metres without using a USB "active" extension cable.