Compaq 500B Microtower Supplementary Manual page 27

10 Remove the two screws that secure the hard disk drive
to the computer.
11 Pull the hard drive out of the front of the computer.
Removing and Replacing a Hard Disk Drive
12 Remove the hard drive from the computer.
13 Carefully remove the replacement hard disk drive from
the electrostatic bag and place the failed hard disk
drive into the bag.
27