Dell Dimension 5150/E510 - Manual (Page 46)

CD/DVD drive out through the front of the computer.
Installing a CD/DVD Drive
1. Follow the procedures in " Before You Begin ."
2. Remove the computer cover.
3. Remove the drive panel .
NOTE: If you are installing a new drive, you need to remove the drive-panel insert .
4. Slide the drive into place until you feel a click or feel the drive securely installed.