5.  Secure the processor and memory expansion tray. 
Figure 25. Securing the processor and memory expansion tray
Rotate the handle all the way down. This connects and fixes the expansion tray to the system 
board.
Pull the retaining tab back to secure the handle.
Connecting cables to the NVMe switch cards
Follow the instructions in this section to learn how to connect cables to the NVMe switch cards.
When working on cable routing plans that involve NVMe switch cards, perform the procedure in the following 
order.
Step 1.  Complete the procedure in “Connecting cables to the processor and memory expansion tray” on 
page 48.
Step 2.  Connect the four PCIe cables to the two NVMe switch cards. 
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ThinkSystem SR850 V2 Maintenance Manual