The CM-74 is mounted at the rear of the cabinet on either side. 1. Choose a location for the vertical cable management rail. Note: The vertical cable management rail can be installed on either side of the cabinet. 2. Install the trapezoidal spring nut into the cabinet frame. Fit the spring nut into the cabinet slotted part of the cabinet extrusion with the spring facing the opening. Turn the spring nut 90 degrees to secure it into place.(See Figure A) 3. Place the mounting hole of the vertic