Lenovo ThinkSystem SR650 Series Setup Manual page 175

Step 2. Pivot the PCIe adapter retention latch to the closed position.
Figure 100. Closing the PCIe adapter retention latch
After installing the PCIe adapter on the riser assembly:
1. Connect cables to the PCIe adapter. See "Internal cable routing" on page 35.
2. Install the riser assembly to the chassis by doing the following:
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Chapter 3 Server hardware setup
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