Dell OptiPlex 170L - Manual (Page 73)

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from a power-saving state, see " Power Management ."
See " Diagnostic Lights for a description of light codes that can help
you troubleshoot problems with your computer.
10 front-panel
door
Open the door to use the front-panel connectors.
*On computers with an optional floppy drive.
1 back panel
connectors
Plug serial, USB, and other devices into the appropriate
connectors.
2 security cable slot Use a security cable with the slot to help secure your computer.
3 padlock ring Insert a padlock to lock the computer cover.
4 card slot Access the connector for a low-profile PCI card.
5 card slots (for
optional full-height
cards)
Access connectors for the optional card cage, which supports 2
full-height PCI cards.
6 voltage selection
switch
See the safety instructions in the Product Information Guide for
more information.
NOTE: Computers with an auto-sensing voltage circuit do not have
a voltage selection switch on the back panel and automatically
detect the correct operating voltage.
7 power connector Connect the power cable.
1 parallel
connector
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.
2 diagnostic
lights
Use the lights to help you recognize a diagnostic code that can tell you
how to trouble shoot a computer problem (see " Diagnostic Lights ").
3 mouse
connector
Plug a standard mouse into the green mouse connector. Turn off the
computer and any attached devices before you connect a mouse to the
computer. If you have a USB mouse, plug it into a USB connector.
4 link integrity
light
l Off — A good connection exists between a 10-Mbps network and
the computer.
l Green — A good connection exists between a 100-Mbps network
and the computer.
5 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.