An electrical connector assembly includes a connector, an inner printed circuit board, and a light guide member made of transparent or semitransparent material. The connector comprising an insulative housing and a plurality of contacts received in the insulative housing, and each contact has a contacting portion and a soldering portion. The inner printed circuit board is welding with the soldering portions of the contacts and defines an LED. The light guide member is neighboring to the LED and exposed out of the electrical connector assembly. The inner printed circuit board defines a control module thereon for controlling the LED on or off and a touch switch arranged in front of the control module, the LED is electrically connected with the control module and the touch switch.