Dell PowerEdge R930 Owner's Manual page 113

Figure 54. Installing the expansion card (full-length) from the left expansion card riser
1 expansion card (full-length)
3 expansion card riser
To enable the installation of full-length expansion card in expansion card risers, ensure the metal brackets are removed from the back
of the memory cage and fan cage. See the illustration below for removing the metal brackets.
2 expansion card latch
Installing and removing system components 113