Dell OptiPlex GX620 - Manual (Page 70)

8. Connect the adapter cable to the serial port adapter connector (SER2) on the system board.
9. Connect any cables that should be attached to the serial port adapter.
10. Replace the computer cover .
Removing a Serial Port Adapter
1. Follow the procedures in " Before You Begin ."
2. Gently push the release tab on the retention lever.
3. If necessary, disconnect any cables connected to the adapter.
4. Grasp the serial-port adapter bracket by its top corners, and ease it out of its connector.
5. Replace the computer cover .
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NOTICE: Do not route cables over or behind any installed cards. Cables routed over the cards can prevent the computer cover from closing properly or
cause damage to the equipment.
NOTE: See the documentation for the serial port adapter for information about the cable connections.