Endoscopy system - comprising an optoelectronic camera, - a supply and evaluation apparatus having a light source, and - a combination cable which has at least one light guide for illuminating at least one portion of the visible region of the optoelectronic camera with light from the light source and has electrical lines for electrically connecting the optoelectronic camera to the supply and evaluation apparatus, and also - comprising a plug connector and comprising a plug socket, wherein - the plug connector has a light guide mount comprising a channel, which is open at both ends, for receiving the light guide, - at least two contact elements are connected to in each case one of the electrical lines, and - the contact elements are arranged on the plug connector in at least one circle which runs coaxially in relation to the light guide mount, - wherein, furthermore, the light guide mount, by way of a tubular section, extends in the plugging direction beyond a main body of the plug connector in such a way that the end of that section of the light guide mount which projects out of the main body is located outside the plug socket when the plug connector is plugged into the plug socket, characterized in that the plug connector, by way of the main body, can be inserted into the plug socket and can be held in the plug socket by means of the said main body, in that a hollow-cylindrical section is provided on a socket main body, it being possible for the wall of the main body of the plug connector to be pushed between the outer wall of the said hollow-cylindrical section and the inner wall of the socket base main body, in that centring for the contact-making operation by the contact elements is formed by the cross section of the light guide mount being formed in a centring section, which is situated between the contact elements and the end of the light guide mount as viewed in the plugging direction, without rotational symmetry in relation to an axis which extends in the plugging direction, and in that that section of the light guide mount which extends beyond the main body in the plugging direction has a length of at least 10 mm, in particular of at least 30 mm, so that the light guide ends immediately in front of a lens or a light source in a channel of the light guide mount, wherein the light guide mount has a chamfer at its free end in the plugging direction. - comprising an optoelectronic camera, - a supply and evaluation apparatus having a light source, and - a combination cable which has at least one light guide for illuminating at least one portion of the visible region of the optoelectronic camera with light from the light source and has electrical lines for electrically connecting the optoelectronic camera to the supply and evaluation apparatus, and also - comprising a plug connector and comprising a plug socket, - the plug connector has a light guide mount comprising a channel, which is open at both ends, for receiving the light guide, - at least two contact elements are connected to in each case one of the electrical lines, and - the contact elements are arranged on the plug connector in at least one circle which runs coaxially in relation to the light guide mount, - wherein, furthermore, the light guide mount, by way of a tubular section, extends in the plugging direction beyond a main body of the plug connector in such a way that the end of that section of the light guide mount which projects out of the main body is located outside the plug socket when the plug connector is plugged into the plug socket,