An electrical connector comprises an insulative housing, a plurality of contacts retained in the insulative housing and including a grounding contact and a first pair of differential signal contacts. The first pair of differential signal contacts have a first signal contact and a second signal contact closing to the grounding contact. Each contact has a contacting portion, a soldering portion, a position portion and a connecting portion. A first distance is defined between a center line of the grounding contact and an inner side edge of the connecting portion of the second signal contact, a second distance is defined between the center line and an inner side edge of the soldering portion, and a third distance is defined between the center line and the position portion, the second distance and the third distance are both smaller than the first distance.