Using the cable-access opening in the top of the rackYou can route external cables through the rectangular cable-access opening in the top rear of the primary orexpansion rack.CableaccesspanelFigure 10. Location of the cable-access openingTo remove the cable-access panel, remove the two screws on the rear of the cable-access panel andremove the panel.14 Lenovo 42U Enterprise Primary Rack and 42U Enterprise Expansion Rack Installation Guide