Dell PowerEdge R750 Installation and Service Manual

Removing the full length expansion card risers

Follow the safety guidelines listed in the Safety instructions.
Follow the procedure listed in the Before working inside your system.
Remove the GPU air shroud top cover.
If installed, remove the GPU air shroud filler.
If applicable, disconnect the cables from the expansion card or system board.
NOTE: If BOSS S2 module is installed, ensure to disconnect the BOSS S2 power cable and Signal cable before removing the Riser 1 cage.
Figure 1. Removing the BOSS power cable and BOSS signal cable from the BOSS S2 controller card module

NOTE:Full length risers are supported only in Riser 1 and Riser 4 slot.

To remove full length expansion card riser:
1. Loosen the captive screws on the riser.
2. Disconnect the GPU power cable from the system board.
3. Press the blue release tab and holding the edges, lift the expansion card riser from the riser connector on the system board.
  NOTE:The numbers on the image do not depict the exact steps. The numbers are for representation of sequence.
Figure 2. Removing the expansion card riser (Riser 1)
Figure 3. Removing the expansion card riser (Riser 4)
If the risers are not going to be replaced, install riser blanks and tighten the captive screws.
NOTE:You must install a filler bracket over an empty expansion card slot to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of the system and aid in proper cooling and airflow inside the system.
Figure 4. Installing the Riser 1 blank
Figure 5. Installing the Riser 4 blank