Dell Alienware Area-51 R3 Threadripper Edition Service Manual page 100

a. chassis
b. securing clips
3. Remove the two screws (#6-32x6) that secure the optical-drive eject-button board to the chassis.
4. Remove the optical-drive eject-button board, along with the cable, off the chassis.
a. optical-drive eject-button board
b. screws (2)
c. chassis
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