Dell GX280DT User Guide - Page 194

1 back panel connectors 2 security cable slot 3 padlock ring 4 card slots 5 voltage selection switch (may not be available on all computers) 6 power connector Plug serial, USB, and other devices into the appropriate connector. Use a security cable with the slot to help secure your computer. Insert a padlock to lock the computer cover. Access connectors for any installed PCI and PCI Express cards. See the safety instructions in the Product Information Guide for more information. Insert the power cable. 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. 3 network adapter connector To attach your computer to a network or broadband device, connect one end of a network cable to either a network jack or your network or broadband device. Connect the other end of the network cable to the network adapter connector on the back panel of your computer. A click indicates that the network cable has been securely attached. NOTE: Do not plug a telephone cable into the network connector. On computers with a network connector card, use the connector on the card. 4 network activity light 5 line-in connector It is recommended that you use Category 5 wiring and connectors for your network. If you must use Category 3 wiring, force the network speed to 10 Mbps to ensure reliable operation. Flashes a yellow light when the computer is transmitting or receiving network data. A high volume of network traffic may make this light appear to be in a steady "on" state. Use the blue line-in connector (available on computers with integrated sound) to attach a record/playback device such as a cassette player, CD player, or VCR. 6 line-out connector On computers with a sound card, use the connector on the card. Use the green line-out connector (available on computers with integrated sound) to attach headphones and most speakers with integrated amplifiers. 7 microphone connector On computers with a sound card, use the connector on the card. Use the pink microphone connector (available on computers with integrated sound) to attach a personal computer microphone for voice or musical input into a sound or telephony program. 8 USB 2.0 On computers with a sound card, the microphone connector is on the card. Use the back USB connectors for devices that typically remain connected,