An image forming apparatus includes an apparatus main body, an image carrier, a developing device, a developer housing container, and a connector. The connector includes a connector housing and elastically deformable second ground terminal and second input/output terminal. The connector housing includes an opening and an end edge. The end edge defines one side portion of the opening. The second ground terminal and the second input/output terminal are projected from the opening. The second ground terminal and the second input/output terminal contact the first ground terminal and the first input/output terminal, respectively by mounting the developer housing container to the internal space. The second ground terminal and the second input/output terminal each abut the end edges on the connector housing with elastic force. The abutment regulates a maximum amount of projection of the second ground terminal and the second input/output terminal with respect to the opening.