StarTech.com 6in Black USB 3.0 Extension Adapter Cable A to A - M/FThe USB3EXT6INBK USB 3. 0 extension cable extends the reach of a USB 3. 0 port on your laptop or desktop computer by 6 inches and gives you more room for connecting multiple devices. The cable can also help to prevent damage to the USB 3. 0 port on your computer in testing environments or other situations where the port is accessed repeatedly. Connect multiple USB devices The extension allows you to connect multiple devices at once, such as flash