NEC PowerMate Enterprise Manual page 127

5. Slide the cover back about one inch. If necessary, grasp the sides where they meet
the rear of the system and press your thumbs against the rear panel to slide the
cover away from the front (see Figure 3-3).
NOTE: The cover fits tightly. Press the front
edge of the cover to release it from the front
panel. Also try pressing against the rear panel to
slide the cover about one inch away from the
front panel.
Lift the cover up and away from the system unit.
6.
Figure 3-3 Removing the Cover
Option Installation 3-5