Dell OptiPlex 745 Quick Reference Manual page 20

1 parallel connector
2 link integrity light
3 network adapter
connector
4 network activity light
5 line-out connector
6 line-in/microphone
connector
7 USB 2.0 connectors (6)
20
Quick Reference Guide
Connect a parallel device, such as a printer, to the parallel connector. If you have a
USB printer, plug it into a USB connector.
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 your online User's Guide.
• Green — A good connection exists between a 10-Mbps network and the
computer.
• Orange — A good connection exists between a 100-Mbps network and the
computer.
• Yellow — A good connection exists between a 1-Gbps (or 1000-Mbps) network
and the computer.
• Off — The computer is not detecting a physical connection to the network.
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.
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 green line-out connector (available on computers with integrated sound)
to attach most speakers with integrated amplifiers.
Use the blue and pink line-in/microphone connector (available on computers with
integrated sound) to attach a record/playback device such as a cassette player, CD
player, or VCR; or a personal computer microphone for voice or musical input into
a sound or telephony program.
Use the back USB connectors for devices that typically remain connected, such as
printers and keyboards.