An electronic apparatus includes: first to third source-side IF units; and a control unit which causes one of the first to third source-side IF units to transmit image data inputted thereto, to a projector, when an operation mode of the electronic apparatus is a first operation mode, and which causes one of the first to third source-side IF units that is not the one of the first to third source-side IF units connected when in the first operation mode, to transmit image data inputted thereto, to the projector, when the operation mode of the electronic apparatus is a second operation mode. The control unit switches the operation mode to one of the first operation mode and the second operation mode in response to a change request received from the projector.