Compaq Deskpro AP550 Reference Manual page 10

CAUTION: When removing the drives, do not pull the drives from the
front of the drive bay. To prevent damage to the drive bezel, push the
drives from the rear to remove them from the front of the drive bay.
Installing the drives
CAUTION: The use of unnecessary force when installing the drive
may result in damage to the drive.
1-6 Product .eatures