Extension cord connects two devices with USB-A connectors or extends your existing USB cable by 16 feet. This USB 3.0 SuperSpeed Type-A Extension Cable (M/F) attaches to your current USB 3.0 cable to extend it by 16 feet. It connects your computer, laptop or other compatible USB 3.0 device, such as a Chromebook or Surface Pro tablet, to a USB-A keyboard, printer, portable hard drive, patch panel or other peripheral. The 16-foot length allows you great flexibility in placing equipment with respect to the power outlet.