Socket connector having additional ring

A socket connector, comprising:

• an insulating housing having a mating portion at a front end thereof, and a sleeve projecting from the mating portion adapted for insertion of a plug of a mating plug connector;
• a plurality of terminals received in the housing;
• and
• a ring covering to an outside of the sleeve and securely fixed to the mating portion, the ring having a color different from that of the insulating housing;
• wherein
• the ring has an inner side, an outer side, a front surface and a rear surface, a plurality of ribs is formed on the inner side of the ring, the ribs engaging with the sleeve;
• wherein
• each rib has a slant surface adjacent to the rear surface for facilitating the engagement of the ribs with the sleeve;
• wherein
• the ring has a pair of opposite latches perpendicularly projecting from the rear surface thereof, each latch has a hook portion outwardly formed on a rear end thereof, the hooks engaging with the mating portion;
• wherein
• the mating portion has a round portion protruding from the front end of the insulating housing, the sleeve extending from a middle portion of the round portion and a pair of holes being defined in the round portion beside the sleeve, the latches being inserted into the holes, respectively.