Patent ID: 8801470

Claim:
An electrical connector comprising: a first insulating housing, comprising a plurality of first accommodating slots, a plurality of second accommodating slots and a plurality of third accommodating slots; a second insulating housing, accommodating the first insulating housing and comprising: a central portion, with an edge in a step-shaped structure, comprising: a plurality of first terminal slots correspondingly connected to the first accommodating slots; a plurality of second terminal slots correspondingly connected to the second accommodating slots; a plurality of third terminal slots correspondingly connected to the third accommodating slots; and a plurality of sunken slots correspondingly connected to the third terminal slots; a plurality of first contacts respectively accommodated in the first accommodating slots and the first terminal slots, and the first contacts comprising a pair of first differential signal terminals and each the first differential signal terminals comprising: a first assembling portion; a first contact portion connected to an end of the first assembling portion; and a first soldering portion connected to another end of the first assembling portion; a plurality of second contacts, respectively accommodated in the second accommodating slots and the second terminal slots, and the second contacts, comprising a pair of second differential signal terminals and a pair of third differential signal terminals and each the second contacts comprising: a second assembling portion; a second contact portion connected to an end of the second assembling portion; and a second soldering portion connected to another end of the second assembling portion; and a plurality of third contacts, respectively accommodated in the third accommodating slots, the third terminal slots and the sunken slots, comprising a pair of fourth differential signal terminals and a pair of fifth differential signal terminals and each the third contact comprising: a third assembling portion; a third contact portion connected to an end of the third assembling portion; and a third soldering portion connected to another end of the third assembling portion; wherein the first soldering portions and the third soldering portions are respectively exposed over the first terminal slots and the sunken slots in one direction, the second soldering portions are exposed over the second terminal slots in another direction.