An X-ray imaging system includes an X-ray imaging apparatus for converting an X-ray into an image signal, a cable for transmitting signals to the X-ray imaging apparatus, a connector, disposed at an end of the cable, for connecting the cable and the X-ray imaging apparatus, and fixing portions for fixing the connector and the X-ray imaging apparatus and allowing the connector to be detached from the X-ray imaging apparatus by a detachment load. A cable outlet of the connector is separated from an outline center axis of the connector. The fixing portions include a first fixing portion disposed on the cable outlet side with respect to the connector outline center axis, and a second fixing portion disposed on the opposite side of the cable outlet. The moment of force required to detach the first fixing portion is larger than that required to detach the second fixing portion.
