Dell OptiPlex 170L - Manual (Page 88)

3. Press in on the tabs on each side of the drive, and slide the drive up and remove the drive from the drive bay.
Installing a CD/DVD Drive
1. Unpack the drive and prepare it for installation.
Check the documentation that accompanied the drive to verify that the drive is configured for your computer. If you are installing an IDE drive, configure
the drive for the cable select setting.
2. If the replacement drive does not have the bracket rails attached, remove the rails from the old drive by removing the two screws that secure each rail
to the drive. Attach the bracket to the new drive by aligning the screw holes on the drive with the screw holes on the bracket rails and then inserting
and tightening all four screws (two screws on each rail).
1 power cable
2 CD/DVD drive cable
3 IDE connector