Setup and Operation: Dell OptiPlex GX1 Small-Form-Factor System User's Guide
file:///C|/infodev/2013/eDoc/OpGX1/UG/setup.htm[2/21/2013 11:47:10 AM]
Your system contains two Universal Serial Bus (USB) connectors for attaching USB-compliant devices. USB-
compliant devices are typically peripherals such as keyboards, mice, printers, and computer speakers.
If you reconfigure your hardware, you may need pin number and signal information for the USB connectors.
Click one of the pins in the illustration for information on a particular signal.
Integrated NIC Connector
Your system has an integrated 10/100-megabit-per-second (Mbps) 3Com® Peripheral Component
Interconnect (PCI) 3C905B-TX Ethernet network interface controller (NIC). The NIC provides all the
functions of a separate network expansion card and supports both the 10BASE-T and 100BASE-TX
Ethernet standards.
The NIC includes a Wakeup On LAN feature that enables the computer to be started by a special local area
network (LAN) signal from a server management console. Wakeup On LAN provides remote computer setup,
software downloading and installation, file updates, and asset tracking after hours and on weekends when
LAN traffic is typically at a minimum.
The NIC connector on the computer's back panel has the following indicators:
A yellow
activity indicator
flashes when the system is transmitting or receiving network data. (A high
volume of network traffic may make this indicator appear to be in a steady "on" state.)
A dual-colored
link integrity indicator
, which lights up green when there is a good connection between a
10-Mbps network and the NIC, or it lights up orange when there is a good connection between a 100-
Mbps network and the NIC. When the green indicator is off, the computer is not detecting a physical
connection to the network.
Audio Connectors
You can use the microphone jack to attach a standard personal computer microphone. Connect the audio
cable from the microphone to the microphone jack. The microphone input is a monaural source with
maximum signal levels of 89 millivolts root-mean-squared (mVrms).
You can use the line-out jack to attach most computer speakers. The line-out jack is amplified, so speakers
with integrated amplifiers are not required. Connect the audio cable from the speakers to this jack.
You can use the line-in jack to attach record/playback devices such as cassette players, CD players, and
VCRs. Connect the line-out cable from any of these devices to the line-in jack on the back of your computer.
Video Connector
The system uses a 15-pin high-density D-subminiature connector on the back panel for attaching a video
graphics array (VGA)-compatible monitor to your system.
Serial Port Connectors
The serial ports use 9-pin D-subminiature connectors on the back panel. These ports support devices such
as external modems or plotters that require serial transmission (sending one bit of data at a time over one
line).
