Dell Precision 3930 Rack Service Manual page 63

NOTE: If removing the graphics card permanently, install Riser1 blank in empty expansion slot opening.
Installing the riser1 Graphics Card
1 Insert the riser1 graphics card into the slot [1] and close the release tab to secure the riser1 graphics card in place [2].
NOTE: Ensure that the graphics card bracket is installed correctly in the slot.
2 Install the:
a Riser 1 module
b Top cover
3 Follow the procedure in After working inside your computer.
Removing and installing components 63