Dell Inspiron 3910 Service Manual page 18

Steps
1. Slide the optical drive into the optical-drive cage through the front of the computer.
2. Replace the two screws (M2x2) that secure the optical drive to the optical-drive cage.
3. Connect the power and data cables to the optical drive.
4. Place the computer in an upright position.
Next steps
1. Install the front cover.
2. Install the left-side cover.
3. Follow the procedure in
18 Removing and installing components
After working inside your computer.