Dell Dimension 3100C - Manual (Page 23)

5. Lift the drive out of the computer and disconnect the power and hard-drive cables from the drive.
Installing a Hard Drive
1. Check the documentation for the drive to verify that it is configured for your computer.
2. Unpack the replacement hard drive, and prepare it for installation.
3. If your replacement hard drive does not have the plastic hard-drive bracket attached, remove the bracket from the existing drive by unsnapping it from
the drive.
4. Place the replacement hard drive in the bracket and press it in until it clicks into place.
5. Connect the power and hard-drive cables to the drive.
1 securing clips (2) 2 hard drive
NOTICE: To avoid damage to the drive, do not set it on a hard surface. Instead, set the drive on a surface, such as a foam pad, that will sufficiently
cushion it.
1 hard drive 2 release tabs (2) 3 plastic hard-drive bracket
1 securing tabs (2) 2 drive 3 release tabs (2)
4 plastic hard-drive bracket