Lenovo ThinkStation P410 Hardware Maintenance Manual page 112

7. Align the notch on the new full-length PCI Express card with the slot key in a PCI Express 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 34.
Note: Ensure that the memory-slot retaining clips are closed before you install the card to avoid any
interference during the installation.
Figure 23. Installing a full-length PCI Express card
8. Pivot the tab on the front fan assembly inward to close the latch inside.
Figure 24. Closing the latch on the front fan assembly
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ThinkStation P410 Hardware Maintenance Manual