Preparing the system to remove and replace the midplane in the ENZ0 PCIe4 expansion drawer

To prepare the system to remove and replace the midplane in an ENZ0 PCIe4 expansion drawer, complete the steps in this procedure.

1. Stop the system and the expansion drawer. When you stop the system, the expansion drawer powers off automatically. For instructions, see Stopping a system.
2. Identify the system that you are working on. For instructions, see Enabling enclosure or server indicators with the ASMI.
   Use the blue identify LED on the enclosure to locate the system. Ensure that the serial number of the system matches the serial number to be serviced.
3. Remove the front cover by placing your fingers in the side grooves and then pulling the front cover away from the expansion drawer. See the following figure.