An electrical connector mounted on a PCB includes: an housing comprising a base, a mating tongue and a mounting portion, each surface of the mating tongue defining twelve terminal positions (P1) through (P12); two rows of terminals, each terminal including a mating portion, a leg portion and a middle portion connecting with the mating portion and the leg portion, each leg portion defining a soldering pad. Each row of terminals include grounding terminals in terminal positions (P1, P12) power terminals in terminal positions (P4, P9), and there are no terminals set in terminal positions (P2, P3, P10, P11). The soldering pads of the two rows of terminals are arranged in one row and at least two grounding terminals or two power terminals aligned with each other in a vertical direction are located side by side so as to share a same pad defined on the PCB.