Fujitsu PRIMERGY TX2550 M5 Upgrade And Maintenance Manual page 456

Accessible drives
Removing the ultraslim ODD dummy cover
Figure 296: Removing the ultraslim ODD dummy cover - ultraslim ODD adapter
▶ Remove the ultraslim ODD dummy cover from the ultraslim ODD adapter.
CAUTION
▶
Keep the dummy cover for future use.
▶
If you remove the accessible drive again and do not replace it
with a new one, the dummy cover must be reinstalled to comply
with EMC regulations and to satisfy cooling requirements and fire
protection measures.
456 Upgrade and Maintenance Manual TX2550 M5