A plug connector assembly including a cable connected to a plug connector, the plug connector including an insulative cover having a light region, a printed circuit board (PCB) received in the insulative cover and having a first surface and an opposite second surface, a mating member mounted on the PCB and extending through the insulative cover, a pair of light-emitting diode (LED) lamps, and a light guide disposed between the two LED lamps, wherein the mating member is mounted on the first surface of the PCB and the two LED lamps are mounted on the second surface of the PCB and wherein the light guide has a top face exposed to the light region of the insulative cover.