An electrical connector, including an insulating body; multiple first terminals, insert molded into the insulating body and having at least one grounding terminal, at least one power supply terminal and a pair of differential signal terminals located between the grounding terminal and the power supply terminal adjacent to each other; and a middle shielding sheet, insert molded into the insulating body, and located above or below the first terminals. The middle shielding sheet has, on at least one side of a central line of the middle shielding sheet, a notch and a first protruding portion away from the central line as compared to the notch. The central line extends in a front-rear direction. The notch is concavely provided backward from a front end edge of the middle shielding sheet, and vertically corresponds to the power supply terminal. The first protruding portion has a through-hole vertically corresponding to the grounding terminal.