A cable connector assembly comprises: a first connector module comprising an insulative housing with a plurality of receiving rooms, a plurality of first connectors respectively received into the receiving rooms, a first PCB electrically connected to the plurality of first connectors and a metallic shell enclosing the insulative housing; and a second connector module comprising a second PCB formed therein; a flat wire electrically connecting to the first connector module and the second connector module. One end of the flat wire is electrically connected to the first PCB, and the other end of the flat wire is electrically connected to the second PCB.