Dell Dimension 1100/B110 - Manual (Page 36)

3. If you are replacing the hard drive, remove the drive from the bracket:
a. Remove the hard drive-securing screws.
b. Remove the hard drive from the bracket.
Installing a Hard Drive
1. Unpack the replacement hard drive, and prepare it for installation.
2. Check the documentation for the drive to verify that it is configured for your computer.
3. Remove the hard drive bracket (see page 50 ).
4. Attach the hard drive to the hard drive bracket:
a. Place the small bracket tabs into the drive screw holes on one side of the drive.