Dell Precision 410 User Manual page 133

tab release
retaining hooks (2)
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While pressing the tab release, tilt the bezel away from the chassis, disengage the
two retaining hooks at the bottom of the bezel, and carefully pull the bezel away from
the chassis.
To replace the bezel, fit the two retaining hooks on the bezel into their corresponding
slots at the bottom of the chassis. Then rotate the top of the bezel toward the chassis
until the top tabs snap into their corresponding slots on the bezel.
Empty drive bays contain a front-panel insert to protect the inside of the computer
from dust particles and also to ensure proper airflow within the computer. Before you
install a drive in an empty drive bay, you must first remove the front-panel insert.
To remove the insert covering a 5.25-inch bay , follow these steps:
Installing Drives 10-3