Acer Altos R720 Series User Manual page 62

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4 Remove the screw that secures the interposer board to the optical
drive tray.
5 Pull the interposer board to remove it, then store the board in a
protective packaging.
6 Press downward on the side of the tray (A) and disengage the
drive from the two metal tabs on the opposite side of the tray (B).
7 Lift the optical drive out of the tray (C).
8 Store the optical drive tray for future use.
A
B
A
3 System upgrade