In a connector including a connector body capable of being connected to or disconnected from a connecting object in a first direction, the connector body has, in a second direction perpendicular to the first direction, a particular dimension greater than a dimension thereof in a third direction perpendicular to the first and second directions. A locking portion is coupled to the connector body for locking the connecting object. The the locking portion is adapted to release locking of the connecting object with movement thereof in the second direction. An operating portion is coupled to the connector body and adapted to engage with the locking portion. The operating portion is adapted to move the locking portion in the second direction according to movement thereof in the third direction.