Lexmark T650 - Page 475

Repair Information 4-153
4062-XXX
11. Insert the long thumbscrew into the hole in the interface card. Turn it just enough to hold the card in place.
Do not tighten yet.
12. Insert the screws to secure the mounting bracket to the system board.
13. Tighten the thumbscrew, and insert the interface card plug into the blue connector on the system board.