Dell GX280DT User Guide - Page 225

See "Diagnostic Lights" for a description of light codes that can help you troubleshoot problems with your computer. 9 floppy-drive activity light The floppy drive light is on when the computer reads data from or writes data to the floppy drive. Wait until this light turns off before you remove the floppy disk from the drive. 10 floppy-drive eject Press to eject a floppy disk from the floppy drive. button Back View 1 power connector 2 voltage selection switch (may not be available on all computers) Insert the power cable. Your computer is equipped with either an auto-sensing voltage selector or a manual voltage selection switch. Computers with an auto-sensing voltage selector do not have a voltage selection switch on the back panel and can automatically detect the correct operating voltage. To help avoid damaging a computer with a manual voltage selection switch, set the switch for the voltage that most closely matches the AC power available in your location. 3 back panel connectors 4 card slots NOTICE: The voltage selection switch must be set to the 115-V position even though the AC power available in Japan is 100 V. Also, ensure that your monitor and attached devices are electrically rated to operate with the AC power available in your location. Plug serial, USB, and other devices into the appropriate connector. Access connectors for any installed PCI and PCI Express cards. 1 serial connector Connect a serial device, such as a handheld device, to the serial port. The default designations are COM1 for serial connector 1 and COM2 for serial connector 2. 2 link integrity light For more information, see "System Setup Options." l Green - A good connection exists between a 10-Mbps network and the computer. l Orange - A good connection exists between a 100-Mbps network and the computer. l Yellow - A good connection exists between a 1-Gbps (or 1000Mbps) network and the computer. l Off - The computer is not detecting a physical connection to the network.