Dell OptiPlex GX520 - Manual (Page 123)

Inside Your Computer
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.
4 network
activity light This light flashes yellow 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.
5 line-in
connector Use the blue line-in connector 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.
6 line-out
connector Use the green line-out connector to attach headphones and most
speakers with integrated amplifiers.
On computers with a sound card, use the connector on the card.
7 microphone
connector Use the pink microphone connector 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.
8 USB 2.0
connectors
(6) Use the USB connectors on the back panel for devices that typically
remain connected, such as printers and keyboards.
9 video
connector Plug the cable from your VGA-compatible monitor into the blue connector.
NOTE: If you purchased an optional graphics card, this connector will be
covered by a cap. Connect your monitor to the connector on the graphics
card. Do not remove the cap.
NOTE: If you are using a graphics card that supports dual monitors, use
the y-cable that came with your computer.
10 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.
For more information, see " System Setup Options ."
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To avoid electrical shock, always unplug your computer from the electrical outlet before removing the computer cover.
NOTICE: Be careful when opening the computer cover to ensure that you do not accidentally disconnect cables from the system board.
1 drives bay (CD/DVD, floppy,
and hard drive)
5 two low-profile PCI card slots
Optionally, you can install a PCI riser card that converts one low-profile PCI slot to two full-height slots. A total of three
card slots are available: one low-profile and two full-height card slots.
2 power supply 6 heat sink assembly
3 chassis intrusion switch 7 front I/O panel
4 system board