An electrical connector (2) includes an insulative housing (20), a number of electrical terminals (21), a conductive shield (23) and a retention element (22). The insulative housing includes a base portion (24) defining a receiving cavity (200) and an island portion (25) extending through the receiving cavity to substantially divide the receiving cavity into a first portion (201) and a second portion (202). The retention element includes a retention portion (223) retained by the insulative housing, a transition portion (222) extending forwardly from the retention portion and a curved portion (221) extending upwardly and rearwardly from the transition portion to project into the second portion of the receiving cavity.