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Install the 4U PCIe expansion tray
Follow instructions in this section to install the 4U PCIe expansion tray.
About this task
Attention: 
•  Go over 
“Installation Guidelines” on page 137 to ensure that you work safely.
•  Touch the static-protective package that contains the component to any unpainted metal surface on the 
server; then, remove it from the package and place it on a static-protective surface.
Procedure
Step 1.  Make sure both 4U PCIe riser power cable modules are installed to the expansion tray. If not, install 
both of them (see 
“Install the 4U PCIe riser power cable assembly” on page 261).
Step 2.  Aligned the nailheads with the slots on both sides of the server, and lower the tray into the server. 
Figure 138. Installing the 4U PCIe expansion tray
Step 3.  Connect both 4U PCIe riser power cables to the power backplane. 
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ThinkSystem SR860 V2 Maintenance Manual