Lenovo 30BY User Manual page 84

b. Align the notch on the new full-length PCIe card with the slot key in a PCIe x16 card slot on the
system board. Then, insert the new card downward into the card slot until it is secured tightly. See
"Parts on the system board" on page 6.
Note: Ensure that the memory-slot retaining clips are closed before you install the card to avoid any
interference during the installation.
Figure 22. Installing a full-length PCIe card
c. Pivot the tab on the front fan assembly inward to close the latch inside.
Figure 23. Closing the latch on the front fan assembly
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P520c User Guide