NEC POWERMATE PROFESSIONAL 9000 Service Manual page 188

3-32 Option Installation
Align the four tabs on the front panel with the holes in the front of the system
3.
unit.
Evenly press the front panel into position until the tabs lock the panel in place.
4.
Replace the system unit cover (see "Replacing the Covers").
5.
Figure 3-26 Aligning the Plastic Blank Panel
Figure 3-27 Aligning the Front Panel