Lenovo ThinkStation P920 Hardware Maintenance Manual page 192

3. Remove the flex module from the front of the computer. See "Device in a flex bay" on page 109.
4. Lift the clip on the rear of the flex module. Then, slide the flex module cover to the rear of the flex module
to remove the cover.
Figure 144. Removing the flex module cover
5. To remove a slim optical drive, do the following:
a. Press the button as shown to remove the slim optical drive from the flex module.
Figure 145. Removing the slim optical drive from the flex module
b. Remove the two screws that secure the clip to remove the plastic clip from the rear of the slim optical
drive.
Note: The plastic clip and the two screws need to be reused to install a new slim optical drive.
Figure 146. Removing the plastic clip from the slim optical drive
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P920 Hardware Maintenance Manual