Lenovo 3421 Personal Computer User Manual


 
This section provides instructions on how to install or replace a PCI card. Your computer has two standard
PCI card slots, one PCI Express x1 card slot, and one PCI Express x16 graphics card slot.
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 14.
3. At the rear of the computer, press the release button 1 to open the card latch 2 .
Figure8. Opening the PCI card latch
4. 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.
16 ThinkCentre User Guide