Dell EMC PowerEdge XR11 Installation And Service Manual page 32

2. Follow the procedure listed in the
Steps
1. Using a 1/4-inch flat head or Phillips #2 screwdriver, rotate the lock counterclockwise to the unlock position.
2. Lift the release latch until the system cover slides back.
3. Lift the cover from the system.
Figure 18. Removing the system cover for Rear Accessed configuration
Figure 19. Removing the system cover for Front Accessed configuration
32 Installing and removing system components
Before working inside your system.