Lenovo ThinkStation P720 Hardware Maintenance Manual page 165

Install PCIe cards according to the corresponding slot types and the following illustrated installation order:
Note: If your computer has only one microprocessor installed, only some PCIe card slots are usable.
Figure 118. PCIe card installation order
Notes:
• The instructions on how to remove or install a PCIe card also applies to the PCI card.
• If your computer comes with a full-length PCIe card, refer to "Full-length PCIe card" on page 164 for its
replacement instructions.
To remove or install a PCIe card, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 103.
2. Lay the computer on its side for easier access to the system board.
3. To remove a PCIe card retainer, do the following:
a. Pull and pivot the tab on the front fan assembly as shown to open the latch inside.
Figure 119. Opening the latch in the front fan assembly
.
Chapter 9 Hardware removal and installation
159