Electrical connector with reliable assembly effect

An electrical connector, comprising:

• an insulative housing defining a receiving cavity adapted for accommodating a complementary connector, a mounting space communicating with the receiving cavity to receive the contact module, and a pair of mounting blocks located at opposite lateral sides of the mounting space;
• a contact module received in the insulative housing and comprising an insulative base received in the mounting space and a plurality of conductive contacts fixed in the insulative base, the insulative base comprising a pair of lateral side edges, each conductive contact comprising a retaining portion fixed in the insulative base and a contacting portion extending slantly from the retaining portion into the receiving space of the insulative housing;
• and wherein
• the conductive contacts comprise a pair of side contacts located at opposite outmost sides thereof, the retaining portion of each side contact is disposed with a protruding section protruding laterally beyond corresponding lateral side edge of the insulative base to engage with respective mounting block formed on the insulative housing.