Dell OptiPlex 170L - Manual (Page 87)

2. Press on the inserts until they pop free of the front-panel cover.
CD/DVD Drive
1. Follow the procedures in " Before You Begin ."
2. If you are installing a new CD/DVD drive rather than replacing a drive, remove the front- panel inserts .
Removing a CD/DVD Drive
1. Disconnect the power and CD/DVD drive cables from the back of the drive.
2. Disconnect the other end of the CD/DVD drive cable from the IDE connector on the system board.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.