Lenovo ThinkStation P720 Hardware Maintenance Manual page 192

15-in-1 card reader
To remove or install a card reader in the flex module, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 103.
2. Disconnect the card reader cable from the 15-in-1 card reader connector on the system board. See
"Parts on the system board" on page 38.
3. Remove the flex module out of the chassis. See "Device in the flex bay" on page 105.
4. Lift the clip 1 on the rear of the flex module and slide the flex module cover to the rear to remove the
cover.
Figure 156. Removing the flex module cover
5. To remove a card reader, do the following:
a. Pull the clip as shown to remove the card reader with its retaining bracket out of the flex module.
Figure 157. Removing the card reader from the flex module
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P720 Hardware Maintenance Manual