Side View - Dell OptiPlex 755 User Manual

hard drive The hard drive access light is on when the computer reads data from or writes data to the hard drive. The light might also be on when
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access light devices such as your CD player are operating.
9 vents The vents help prevent your computer from overheating. To ensure proper ventilation, do not block these cooling vents.

Side View

The vents located on each side of the computer help prevent your computer from overheating. To ensure proper ventilation, do not block
1 vents
these cooling vents.
mounting
2 For mounting optional stand.
holes
Back View
1 diagnostic lights
2 computer cover release knob Rotate this knob in a clockwise direction to remove the cover.
3 security cable slot
4 back panel connectors
5 power connector
6 vents
Back Panel Connectors
parallel
1 Connect a parallel device, such as a printer, to the parallel connector. If you have a USB printer, plug it into a USB connector.
connector
Green — A good connection exists between a 10-Mbps network and the computer.
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Orange — A good connection exists between a 100-Mbps network and the computer.
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link integrity
Yellow — A good connection exists between a 1000-Mbps (1-Gbps) network and the computer.
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2
light
Off — The computer is not detecting a physical connection to the network or the network controller is turned off in system setup.
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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.
See Diagnostic Lights for a description of light codes that can help you troubleshoot problems with your computer.
See Padlock Ring and Security Cable Slot
See Back Panel Connectors for a description of the connectors for your computer.
Insert the AC power adapter plug.
The vents help prevent your computer from overheating. To ensure proper ventilation, do not block these cooling vents.
for information about using the security cable slot.