Lenovo ThinkCentre M77 1990 User Manual page 46

To install or replace a PCI card, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See "Removing the computer cover" on page 32.
3. At the rear of the computer, press the release button
Figure 11. Opening the PCI card latch
4. Depending on whether you are installing or replacing a PCI card, do one of the following:
• If you are installing a PCI card, remove the appropriate metal slot cover.
• If you are replacing an old PCI card, grasp the old card that is currently installed and gently pull it
out of the slot.
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ThinkCentre User Guide
1 to open the card latch 2 .