RECEPTACLE CONNECTOR

A receptacle connector includes an insulating housing defining a receiving chamber having a front opened freely, and positioning fillisters each longitudinally opened in a bottom wall of the receiving chamber. Two fastening fillisters are oppositely concaved into two opposite inner sides of the positioning fillister. A plurality of electrical terminals each has a base arm disposed in the positioning fillister and a contact arm extending upward from a front end of the base arm and inclined rearward at an acute angle with respect to the base arm. The contact arm stretches into the receiving chamber. The front end of the base arm has two opposite side edges protruded outward to form two fastening ears stabbed in fronts of the fastening fillisters to avoid the front end of the base arm curling upward and rearward when a plug connector is inserted into the receiving chamber.