An electrical connector includes a metal shell, an insulative housing and at least one terminal retained in the insulative housing. The metal shell defines a front-to-rear direction and a lateral direction perpendicular to the front-to-rear direction and includes a pair of elastic arms extending rearward from a rear edge thereof and a pair of latch portions extending along the lateral direction from free tips of the elastic arms. The insulative housing comprises a base portion and a mating portion extending forwardly from the base portion. The base portion defines a pair of protrusions extending along the lateral direction. The terminal includes a contact portion disposed on the mating portion. The metallic shell is assembled to the insulative housing in the front-to-rear direction. The latch portions of the metal shell lock with the protrusions of the housing so as to secure the shell to the insulative housing.