Dell OptiPlex GX260 User Guide - Page 81
Small Desktop Computer
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11 diagnostic lights 12 video connector 13 serial connector Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights." Plug the cable from your VGA-compatible monitor into the blue connector. Connect a serial device, such as a handheld device, to the serial port. If you have a second serial connector card installed, you can connect a second device to that connector. For more information, see "System Setup Options." Inside Your Computer CAUTION: Before you begin any of the procedures in this section, follow the steps in "CAUTION: Safety Instructions." CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before opening the cover. NOTICE: Be careful when opening the computer cover to ensure that you do not accidently disconnect cables from the system board. Small Desktop Computer 1 hard drive 6 2 chassis intrusion switch 7 3 internal speaker 8 4 card cage 9 padlock ring heat sink and blower assembly system board floppy drive