Lenovo 3719, 3821, 3822, 3823 manual

Rear adapter retention bracket

Adapter

Front adapter retention bracket

6. If you are installing a full-length adapter, remove the blue adapter guide	(if
any) from the end of the adapter. Otherwise, continue with the next step.

7.Press the adapter firmly into the expansion slot, lower the adapter-retention bracket, and make sure that the bracket is in the closed position.

Attention: Incomplete insertion might cause damage to the system board or the adapter.

8.Connect any needed cables to the adapter.

186ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual