Lenovo ThinkSystem SR645 Setup Manual page 147

Step 4. Install the OCP 3.0 Ethernet adapter.
Figure 69. OCP 3.0 Ethernet adapter installation
a. Push the OCP 3.0 Ethernet adapter as shown to insert it into the connector on the system
board.
b. Tighten the thumbscrew to secure the adapter.
Notes:
• Ensure that the thumbscrew is securely tightened. Otherwise, the OCP 3.0 Ethernet adapter
will not get full connection and may not function.
• If there is an OCP 3.0 Ethernet adapter installed, when the system is powered off but still
plugged in to AC power, system fans will continue to spin at a much lower speed. This is the
system design to provide proper cooling for the OCP 3.0 Ethernet adapter.
.
Chapter 4 Server hardware setup
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