NEC POWERMATE VT 300 Manual page 87

4. Remove the two thumb screws holding the left side cover
to the rear of the chassis.
5. Grasp the handle on the left side cover and slide the cover
towards the rear of the chassis about an inch.
6. Pull the top of the side cover away from the chassis about
one-half inch, then lift the cover off the system.
Removing the left side cover
A – Left Side Cover
B – Thumb Screws
4-6 Installing Options
C – Handle
D – Lock Tab