Dell OptiPlex GX270 - Manual (Page 126)

Inside Your Computer
4 network adapter
connector
To attach your computer to a network, connect one end of a network cable to either a network jack or your network 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.
On computers with a network connector card, use the connector on the card.
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.
5 network activity
light
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.
6 line-in connector 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.
On computers with a sound card, use the connector on the card.
7 line-out
connector
Use the green line-out connector (available on computers with integrated sound) to attach headphones and most speakers with
integrated amplifiers.
On computers with a sound card, use the connector on the card.
8 microphone
connector
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.
On computers with a sound card, the microphone connector is on the card.
9 USB 2.0
connectors (6)
Use the back USB connectors for devices that typically remain connected, such as printers and keyboards, and for bootable USB
devices.
10 keyboard
connector
If you have a standard keyboard, plug it into the purple keyboard connector. If you have a USB keyboard, plug it into a USB
connector.
11 diagnostic lights Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see " Diagnostic
Lights ."
12 video connector Plug the cable from your VGA-compatible monitor into the blue connector.
NOTE: If your computer shipped with a video card installed, this connector will be have a cap on it. Plug the monitor cable into the
connector on the card.
NOTE: If you are using a video card that supports dual monitors, use the y-cable that came with your computer.
13 serial connector Connect a serial device, such as a handheld device, to the serial port. In system setup, the default designation is COM1.
For more information, see " System Setup Options ."
CAUTION: Before you begin any of the procedures in this section, follow the steps in " 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 disconnect cables from the system board.