Dell GX280DT User Guide - Page 96

10 microphone connector Use the microphone connector to attach a microphone. Back View 1 cover release latch 2 padlock ring 3 voltage selection switch (may not be available on all computers) This latch allows you to open the computer cover. Insert a padlock to lock the computer cover. 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. NOTICE: The voltage selection switch must be set to the 115-V position even though the AC power available in Japan is 100 V. 4 power connector 5 back panel connectors 6 card slots Also, ensure that your monitor and attached devices are electrically rated to operate with the AC power available in your location. Insert the power cable. Plug serial, USB, and other devices into the appropriate connector. Access connectors for any installed PCI and PCI Express cards. 1 parallel connector Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connector. 2 link integrity light NOTE: The integrated parallel connector is automatically disabled if the computer detects an installed card containing a parallel connector configured to the same address. For more information, see "System Setup Options." l Green - A good connection exists between a 10-Mbps network and the computer.