Compact design and reliable connection for the Male/Female USB 2.0 A to secrew terminal adapter cable. No soldering required, easy to use, this takes all that soldering and aggravation out of the equation, just screw in the wires and use it. Great time saver. This USB 2.0 A adapter is available for charging and data transfer. It can extend the length of the USB cable, 4-pin (way) bolt screw terminal pluggable connector can be plugged into the USB plug, Then connect the socket to the other wires, The length of the USB cable can be extended.