Lenovo ThinkCentre Edge 91 Hardware Maintenance Manual page 129

Figure 57. Removing the optical drive
9. Slide the new optical drive into the optical drive bay from the front of the computer.
Figure 58. Installing a new optical drive
10. Hold the new optical drive and pivot the drive bay assembly upward. Align the screw holes in the new
optical drive with the corresponding holes in the drive bay. Then, install the two screws to secure
the new optical drive in place.
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Chapter 9 Replacing FRUs (Machine Types: 1857, 1893, and 1895)