Dell OptiPlex 7000 Small Form Factor Service Manual page 24

Steps
1. Disconnect the hard-drive data and power cables from the connectors on the 3.5-inch hard drive.
2. Press the tab on the hard-drive carrier and lift the hard-drive carrier.
3. Slide the hard-drive carrier away from the chassis and lift hard-drive carrier out of the disk-drive cage.
4. Pry the hard-drive carrier to release the mounting points on the carrier from the slots on the 3.5-inch hard drive.
5. Lift the 3.5-inch hard drive off the hard-drive carrier.
24 Removing and installing components