An electrical connector including an insulator body, a shield, and an upper and lower rows of terminals held in the insulator body. One of the two rows of terminals is a row of low speed circuit terminals, and the other one is a row of high speed circuit terminals. The row of high speed circuit terminals includes two pairs of high speed differential signal terminals, and each of the high speed differential signal terminals has a contact portion, an insertion portion and a connection portion between the contact portion and the insertion portion. A part of the connection portion of the high speed differential signal terminal is folded away from the low speed circuit terminal to form a folding section. It increases the space between the high speed differential signal terminal and the low speed circuit terminal and effectively reduces the capacitive coupling crosstalk therebetween.