Lenovo System x3550 M4 Installation And Service Manual page 78

Figure 51. Network adapter installation
Step 8. Press the adapter firmly until the pin, and retention brackets engage the adapter. Make sure the
adapter is securely seated on the connector on the system board.
Attention: Make sure the port connectors on the adapter are aligned properly with the chassis on
the rear of the server. An incorrectly seated adapter might cause damage to the system board or
the adapter.
Step 9. Fasten the thumbscrew on the rear side of the chassis.
Figure 52. Screws engagement
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Lenovo System x3550 M4 Installation and Service Guide