Abstract: An injector/ejector system that provides for easy insertion and removal of a printed circuit board module into and out of a mainframe. The injector/ejector system is defined by a unitary lever arm and two curved finger extensions oppositely situated and which is attached to a front panel of a circuit board module proximate to an exterior corner of the circuit board module. The lever is attached with a shoulder screw assembly to the module and operates through a cutout notch in the front panel that extends approximately 4.0 mm from the edge of the front panel. The grasping end of the lever arm is formed in such a manner that when the module is in the installed position, the grasping surface of the lever is approximately 3.7 mm away from the surface of the front panel, thus allowing the operator to insert his/her fingertip between the front panel of the module and the lever, thus permitting actuation of the ejection process by the operator's fingertip.