Lenovo ThinkStation P900 User Manual page 126

To install or replace a full-length PCI Express card, 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 77.
3. Lay the computer on its side for easier access to the PCI card slots.
4. Locate the PCI card slot in which you want to install or replace a PCI card. See "Locating parts on
the system board" on page 5.
Note: If your computer is installed with only one microprocessor, refer to the order of installing PCI
cards shown on the left figure. If your computer is installed with two microprocessors, refer to the order
of installing PCI cards shown on the right figure.
1
Figure 53. The order of installing PCI cards
5. Remove the direct cooling air baffle if it impedes your operation. See "Removing and reinstalling the
direct cooling air baffle" on page 94.
6. Depending on whether you are installing or replacing a full-length PCI Express card, do one of the
following:
• If you are installing a full-length PCI Express card, do the following:
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