Installing the secondary PCI riser cage NOTE: If installing an expansion board into slot 3, a second processor must be installed. Procedure Install the PCI riser cage. If needed, install expansion boards. Do one of the following: Install the primary PCI riser blank. Install the primary PCI riser cage. Install the access panel. Install the server into the rack. Connect each power cord to the server. Connect each power cord to the power source. Power up the server. If removed, install the bezel.