Lenovo ThinkCentre M91p (English) User Guide - Page 45

Depending on whether you are installing or replacing a PCI card, do one of the following

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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. Open the computer cover. See "Opening the computer cover" on page 28. 3. Locate the system board and disconnect all cables connected to the system board. See "Locating parts on the system board" on page 10. 4. Press inward on the two side tabs and then pivot the system board to release it from the chassis. Figure 11. Releasing the system board 5. Place the system board on a clean and flat surface. 6. Locate the PCI card slot. See "Locating parts on the system board" on page 10. 7. Rotate the PCI card retainer to the open position. 8. 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 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. Figure 12. Removing the PCI card Chapter 5. Installing or replacing hardware 31

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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. Open the computer cover. See “Opening the computer cover” on page 28.
3. Locate the system board and disconnect all cables connected to the system board. See “Locating
parts on the system board” on page 10.
4. Press inward on the two side tabs and then pivot the system board to release it from the chassis.
Figure 11. Releasing the system board
5. Place the system board on a clean and flat surface.
6. Locate the PCI card slot. See “Locating parts on the system board” on page 10.
7. Rotate the PCI card retainer to the open position.
8. 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 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.
Figure 12. Removing the PCI card
Chapter 5
.
Installing or replacing hardware
31