Lenovo ThinkStation E31 User Manual page 52

Note: You might have to remove the metal cover of the card reader drive bay.
5. Install the new card reader into the card reader bracket. Then install the two screws to secure the
card reader to the bracket.
6. Install the card reader bracket to the chassis. Then push the bracket to the left to align the screw hole in
the bracket with the corresponding hole in the chassis.
Figure 17. Installing the card reader
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ThinkStation User Guide