A connector device comprising a connector and a mating connector, wherein: the connector is mateable with the mating connector and removable from the mating connector; the mating connector includes a mating housing, a mating primary terminal and a mating secondary terminal; the mating primary terminal and the mating secondary terminal are held by the mating housing; the connector includes a housing, a primary terminal, a sub-connector, a first operation member and a second operation member; the primary terminal is held by the housing; the sub-connector includes a secondary terminal; the sub-connector is supported by the housing to be locatable at each of a first position and a second position; the first operation member is supported by the housing to be locatable at each of a first initial position and a first displaced position; the second operation member is supported by the first operation member to be locatable at each of a second initial position and a second displaced position; when a first mating operation is performed, the housing is moved to a mating position, and the primary terminal is connected to the mating primary terminal, wherein the first mating operation is an operation of moving the first operation member from the first initial position to the first displaced position; and when a second mating operation is performed subsequent to the first mating operation, the sub-connector is moved to the second position from the first position, and the secondary terminal is connected to the mating secondary terminal, wherein the second mating operation is an operation of moving the second operation member from the second initial position to the second displaced position, characterized in that: the second operation member is attached to the first operation member and is moved along a turning direction together with the first operation member when the first mating operation is performed. the connector is mateable with the mating connector and removable from the mating connector; the mating connector includes a mating housing, a mating primary terminal and a mating secondary terminal; the mating primary terminal and the mating secondary terminal are held by the mating housing; the connector includes a housing, a primary terminal, a sub-connector, a first operation member and a second operation member; the primary terminal is held by the housing; the sub-connector includes a secondary terminal; the sub-connector is supported by the housing to be locatable at each of a first position and a second position; the first operation member is supported by the housing to be locatable at each of a first initial position and a first displaced position; the second operation member is supported by the first operation member to be locatable at each of a second initial position and a second displaced position; when a first mating operation is performed, the housing is moved to a mating position, and the primary terminal is connected to the mating primary terminal, wherein the first mating operation is an operation of moving the first operation member from the first initial position to the first displaced position; and when a second mating operation is performed subsequent to the first mating operation, the sub-connector is moved to the second position from the first position, and the secondary terminal is connected to the mating secondary terminal, wherein the second mating operation is an operation of moving the second operation member from the second initial position to the second displaced position, characterized in that: the second operation member is attached to the first operation member and is moved along a turning direction together with the first operation member when the first mating operation is performed. the second operation member is attached to the first operation member and is moved along a turning direction together with the first operation member when the first mating operation is performed.