The USB3SEXT5DKB Black Desktop USB 30 Extension Cable connects to an available USB female port on a Mac or PC computer allowing you to relocate the USB (female) port up to 5-feet away from the computer case By extending the USB 30 port away from the computer case you can situate a USB 30 port from the computer in a more practical spot such as on top of the computer case or on a desktop The extension cable features high quality Shielded Twisted Pair (STP) construction helping to prevent electro-magnetic interference and ensuring reliable data communication