An electrical connector assembly includes a circuit board; a first connector which includes a first insulating body and a first terminal group, where the first terminal group is provided on the first insulating body along a longitudinal direction, the first terminal group includes multiple first signal terminals and at least one first power terminal, and the first power terminal is closer to one of two edges of the first connector along the longitudinal direction than the first signal terminal; a chip provided on the circuit board and electrically connected to the first signal terminals; and a filter provided on the circuit board and electrically connected to the first power terminal. The filter is arranged right behind the first power terminal. The chip is provided right behind the first signal terminals.