Dell D31M Owner's Manual page 54

Steps
1. Pry one side of the hard drive bracket edge to release the tabs on the bracket from the slots on the hard drive.
2. Lift at an angle and remove the hard drive off the hard drive bracket.
Installing the 3.5-inch hard drive bracket
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the 3.5-inch hard drive bracket and provides a visual representation of the
installation procedure.
54 Removing and installing Customer Replaceable Units (CRUs)