Lenovo ThinkStation P520 Hardware Maintenance Manual page 188

Figure 140. Removing the card reader from the card reader retaining bracket
6. To install a card reader, do the following:
a. To install a new card reader into the card reader retaining bracket, align the four holes in the card
reader with the corresponding studs on the bracket. Then, press the new card reader downward until
it snaps into position.
Figure 141. Installing the card reader into the card reader retaining bracket
b. Note the orientation of the new card reader and route the card reader cable into the cable clip. Hold
the clip on the card reader retaining bracket. Then, insert the new card reader into the card reader
slot in flex module until it snaps into position.
Figure 142. Installing the card reader in the flex module
7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the flex
module cover engage the rails on the flex module. Then, push the cover to the front of the flex module
until it snaps into position.
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P520 Hardware Maintenance Manual