Dell EMC PowerEdge R7515 Installation And Service Manual page 86

NOTE: The procedure to remove expansion card from riser 1A, riser 2, or riser 1B is identical.
Steps
1. Disconnect the FPGA cable from the Power Interposer Board (PIB) and expansion card riser.
Figure 88. Disconnecting the FPGA cable from the PIB and the expansion card riser
2. Ensure to release the latch to remove the expansion card riser.
Figure 89. Opening the latch on the expansion card riser
3. Hold the accelerator card by the edges and pull to disconnect from the expansion card connector on the expansion card
riser.
86 Installing and removing system components