Electrical connector

An electrical connector for insertion with a mating connector, the mating connector having a shielding shell, and the electrical connector comprising:

• an insulating body having a base and a tongue extending forward from the base;
• a plurality of terminals fixed in the base and extending to the tongue;
• and
• a metal shell fixed on the base and defining an insertion space between the metal shell and the tongue for receiving the mating connector,
• wherein the metal shell comprises two first walls arranged oppositely along an upper side and a lower side, two second walls arranged oppositely along a left side and a right side, and a limiting surface connected with each of the first walls and corresponding one of the second walls;
• and
• wherein when the mating connector is inserted in the insertion space, a first distance exists between each first wall and the shielding shell, a second distance exists between each second wall and the shielding shell, a third distance exists between each limiting surface and the shielding shell, and the third distance is less than the first distance and the second distance.