Dell Dimension 4700 - Manual (Page 27)

11. Connect your computer and devices to their electrical outlets, and turn them on.
See the documentation that came with the drive for instructions on installing any software required for drive operation.
12. Enter system setup and select the appropriate Drive option.
13. Verify that your computer works correctly by running Dell Diagnostics (see the Owner's Manual).
Adding a Second CD or DVD Drive
1. Ensure that the jumper setting on the new drive is set for "cable select" (see the documentation that came with the drive for information).
2. Remove two extra alignment screws, from the front of the computer and insert them into the drive as shown in the following illustration.
3. Gently slide the drive into place in the drive bay.
4. After the drive is in place, apply pressure to ensure that the drive is fully seated.
5. Use the securing screw that came with the drive to attach the drive to the computer.
6. Connect the power cable to the system board .
7. Locate the data cable from the CD or DVD drive in the upper drive bay and connect its middle data connector to the new drive.
NOTICE: To connect a network cable, first plug the cable in to the network wall jack and then plug it into the computer.
NOTE: Some computers come with only two extra alignment screws; others come with four. You only need two alignment screws for this procedure.
NOTICE: Match the colored stripe on the cable with pin 1 on the drive (pin 1 is marked as "1").