An electrical connector includes: a terminal module including a first unit having a first row of contacts, a second unit having a second row of contacts, and a shielding plate between the first and second units, each of the first and second units including a rear base and a front tongue, the rear base of the first unit being locked to the rear base of the second unit; and a shielding shell enclosing the terminal module, wherein the shielding plate has a pair of engaging arms, and the first unit has at a junction between the base and the tongue thereof two side portions locked to the pair of engaging arms.