Electrical connector structure capable of reducing relative movement between signal modules

An electrical connector structure comprising:

• a housing;
• and
• a plurality of signal modules mounted in the housing, each of the signal modules comprising an insulating body, a plurality of conductive terminals, and a ground shield, the insulating body having a first side and a second side opposite thereto, the first side having a guide projection, the second side having a guide groove, the conductive terminals being disposed in the insulating body, the ground shield being mounted on the first side or the second side of the insulating body;
• wherein, the signal modules comprise a first signal module and a second signal module, when the first signal module has been mounted in the housing, the second signal module is guided and moved to mount into the housing by the guide groove of the second side of the second signal module receiving the guide projection of the first side of the first signal module;
• or, the second signal module is guided and moved to mount into the housing by the guide projection of the first side of the second signal module sliding into the guide groove of the second side of the first signal module.