Dell OptiPlex 745c (Early 2007) - Manual (Page 69)

Installing an Optical Drive
1. Follow the procedures in Before You Begin .
2. If you are replacing an optical drive, remove the shoulder screws from the existing drive and attach the screws to the replacement drive.
3. If you are installing a new optical drive, remove the drive-panel insert for your new drive, remove the shoulder screws from the inside of the drive-panel
insert, and attach the screws to the new drive.
4. Check the documentation that accompanied the drive to verify that the drive is configured for your computer.
5. Align the shoulder screws on the optical drive with the shoulder screw slots, and slide the drive into the bay until it clicks into place.
1 optical drive 2 drive release latch
1 optical drive 2 shoulder screws (3) 3 shoulder screw slots (2)