A power connector (100) can mate with a complementary connector and includes a mating plug (1) matable with the complementary connector, a circuit board (2) connected to the mating plug, a light-emitting diode (4) assembled to the circuit board to indicate working status of the power connector and a light pipe (6) transmitting the light from light-emitting diode. The mating plug includes first and second terminals (12, 13) for power transmission.