An endoscope system including an endoscope including an endoscope electro-pneumatic connection assembly having a leak test port, an endoscope electro- optic subsystem which is connectable to the endoscope via the endoscope electro- pneumatic connection assembly in a manner which precludes access to the leak test port when the endoscope electro-optic subsystem and the endoscope are connected at the electro-pneumatic connection assembly and an electro-pneumatic adaptor, which is connectable to the endoscope at the electro-pneumatic connection assembly and includes an adaptor electro-pneumatic connection assembly, including a leak test port connector for connection to the leak test port of the endoscope, an adaptor electrical port assembly to which the endoscope electro-optic subsystem is connectable and a pneumatic port.
