The USBEXTAA5DSK 5ft Desktop USB Extension Cable connects to a to an available USB port on the host computer to create a USB port that can be accessed from a more convenient location (on top of computer tower, on a desktop, etc.).To ensure that the USB port remains in place when devices are connected, the Desktop USB Extension Cable provides traction on the bottom of the unit, making it a perfect solution for connecting portable devices such as USB thumb drives, MP3 players, external USB storage and more.