A device connector (10) is mounted into a mounting hole (C1) on a case (C) of a device in a vehicle, and includes terminals (50) connected to wires (W). A synthetic resin housing (30) includes a wire introducing portion (32) and a fitting portion (31). The wire introducing portion (32) receives the wires (W) and the terminals (50) while the fitting portion (31) fits into the mounting hole (C1). A metal shield shell (60) accommodates the wire introducing portion (32) and includes a lower shell (62) for covering the entire outer circumferential surface of the wire introducing portion (32). A seal ring (72) fits on an outer surface of the wire introducing portion (32) and seals between the lower shell (62) and the wire introducing portion (32). Water drainage holes (77) vertically penetrate a stepped portion (69) of the lower shell (62) above the seal ring (72).