A plug connector assembly includes: a plug connector having a cage, and a PCB received in the cage, the PCB including a mating end for being mated with a mating connector and an opposite connecting end, the connecting end comprising a first row of pads and a second row of pads disposed at one side of the PCB; at least one cable electrically connected to the connecting end, the at least one cable comprising a number of core wires, the core wires comprising a first group of core wires and a second group of core wires extending beyond the first group of core wires, the first group of core wires soldered to the first row of pads, the second group of core wires soldered to the second row of pads; and an insulative member isolating a soldering area of the first and second group of core wires.