An electrical connector includes an insulative housing (10) adapted to engage conductive terminals, and having an IC package mating surface (101) and an opposite substrate mounting surface (103). A rigid strip (12), in a substantially wavy, is attached to and configured to surround peripheral walls of the insulative housing. The rigid strip includes a first series of spaced protrusion portions (120) extending above the IC package mating surface so as to define a receiving cavity therebetween for receiving an IC package, and a second series of spaced protrusion portions (122) extending below the substrate mounting surface with at least four spaced protrusion portions around four corners of the insulative housing disposed in a substantially coplanar manner to function as standoffs. Such a configuration and shape of the rigid strip will have the function of reinforcing the insulative housing while not taking up much more “real estate” of the substrate.