A universal series bus (USB) connector (1) includes an insulative housing (12), a number of contacts (14) received in the housing and a metal shell (15) enclosing the housing and the contacts in the metal shell. The metal shell includes a front shield (16) and a rear shield (18) engaging with each other. The rear shield has a pair of board locks (184) at opposite sides thereof, which downwardly extend beyond a rear bottom surface (125) of the housing for mounting to a printed circuit board (PCB) (2). The front shield has a rear edge (163) confronting the rear shield. The front shield includes a pair of back plates (167) rearwardly extending from the rear edge thereof and sandwiching the rear shield therebetween. The front shield further includes two supporting devices (168) outwardly extending from the rear edge thereof and locating at opposite sides thereof. The two supporting devices each are inverted L-shaped and have a pin portion (1684) mountable to the PCB.