Saisn USB 2.0 Extension Cable offers an easy way to extends your USB connection to the computer or Mac, for use with Wireless Network Adapter, 3G Network Adapter, Wifi Receiver, Printer, Scanner, Camera, USB Display Adapter, Mouse, Keyboard, USB Flash Drive and other USB computer peripherals. Built in power adapter jack and included a AC power adapter, for supporting power hungry USB devices, and to ensure your connected USB devices receive the power they need. There is a LED indicator on it, the green light is on means connection is successful. This Extension Cable supports high speed USB 2.0 data transfer rate up to 480 Mbps. Built in FE1.1s low-power signal booster chipset, which assures peak performance with minimum loss of signal quality, and wouldn't be hot after long working hours. Every 10 meters 1 signal booster to ensure the best singal transmission. The uniquely designed weatherproof cover ensures that the connection between the attached USB device and the extension cable is protected from the harsh environment, allowing the device to be used outdoors. Important note: This extension cable can't be used for charging. This extension cable can't be used on DVR.