The usbextaa5dsk desktop usb extension cable connects to an available usb female port on a macreg or pc computer allowing you to relocate the usb female port up to 5 ft away from the computer case by extending the usb port away from the computer case you can situate a usb port in a more practical spot such as on top of the computer case or on a desktop a perfect solution for accessing digital cameras mp3 players usb thumb drives or other external usb storage the desktop usb extension