The server might be shipped with module-replacement filler panels for storage drives and PCIe cards. These filler panels are installed at the factory and must remain in the server until you replace them with a purchased option.
Note - In single-processor systems, the server ships with a DIMM filler panel installed in processor 1 (P1) socket D7. This DIMM filler panel must not be removed from the system because it supports proper air flow for cooling.
Before you can install an optional server component into the server, you must remove the filler panel from the location into which you intend to install the component. When you remove a storage drive or a PCIe card from the server, you must install either a replacement for the component removed or a filler panel.