Dell OptiPlex GX270 - Manual (Page 73)

10. Slide the adapter card bracket down over the card slot opening, and lower the retention arm, securing the bracket.
11. Route the serial adapter cable under the card cage, and attach the cable to the connector on the system board (labeled SER2).
12. Close the computer cover, reconnect the computer and devices to electrical outlets, and turn them on.
After you open and close the cover, the chassis intrusion detector, if enabled, causes the following message to appear on the screen at the next
computer start-up:
ALERT! Cover was previously removed.
13. Reset the chassis intrusion detector by changing Chassis Intrusion to Enabled or Enabled-Silent.
Removing a Serial Port Adapter
1. Shut down the computer through the Start menu.
2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut
down your computer, turn them off now.
3. Disconnect any telephone or telecommunication lines from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5. Remove the computer stand , if it is attached.
6. Open the computer cover .
7. Disconnect the serial adapter cable from the connector on the system board.
8. Remove the card cage (see " Installing a PCI Card ").
9. Press the lever on the retention arm and raise the retention arm (see step 8 in the previous procedure).
1 serial card system board connector (SER2)
2 serial adapter cable
3 card cage
NOTICE: To connect a network cable, first plug the cable into the network wall jack, and then plug it into the computer.
NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion
detector.
CAUTION: Before you begin any of the procedures in this section, follow the steps in " Safety Instructions ."
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the
computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.