Lenovo ThinkStation 2551 Hardware Maintenance Manual page 104

To replace the card reader, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See "Removing the computer cover" on page 88.
3. Remove the front bezel. See "Removing and reinstalling the front bezel" on page 89.
4. Locate the card reader. See "Locating major FRUs and CRUs" on page 73.
5. Disconnect the card reader cable from the front USB connector on the system board. See "Locating
parts on the system board" on page 76.
6. Press the blue retaining clip to remove the card reader out of the chassis.
Figure 24. Removing the card reader
7. Install the card reader retainer on the side of the new card reader.
Figure 25. Installing the card reader retainer
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ThinkStation Hardware Maintenance Manual