a. Open the retaining clips on each end of the VRM connector.b. Turn the VRM so that the keys align with the connector.c. Insert the VRM into the connector by aligning the edges of the VRM withthe slots at the end of the VRM connector. Firmly press the VRM straightdown into the connector by applying pressure on both ends of the VRMsimultaneously. The retaining clips snap into the locked position when theVRM is seated in the connector.13. Reinstall the microprocessor air duct.14. Reinstall the left-side cover.15. Reconnect external cables and power cords.If you have other optional devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 46.Installing redundant power and coolingYou can install a second 835-watt hot-swap power-supply. This upgrade optionincludes a hot-swap power supply, two hot-swap fans, a fan structure with an airduct and a single hot-swap fan. You must also purchase a second power cord toconnect the power-supply to the power source.To install the redundant power and cooling option, complete the following steps:1. Read the safety information that begins on page v and “Installation guidelines”on page 21.2. Turn off the server and peripheral devices, and disconnect the power cordsand all external cables. Remove the left-side cover.3. Remove all adapters.Hot-swap fanFan air baffle42 IBM System x3500 Type 7977: User’s Guide
