Dell Dimension 5150 Owner's Manual - Page 62

NOTICE, Keep the vent area clean and dust-free to ensure

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8 diagnostic lights (4) 9 hard-drive activity light 10 power button, power light 11 USB 2.0 connectors (2) 12 vents Use the lights to help you troubleshoot a computer problem based on the diagnostic code. For more information, see "Diagnostic Lights" on page 47. The hard drive activity light is on when the computer reads data from or writes data to the hard drive. The light might also be on when a device such as a CD player is operating. Press the power button to turn on the computer. The light in the center of this button indicates power state. See "Specifications" on page 103 for more information. NOTICE: To avoid losing data, do not use the power button to turn off the computer. Instead, perform an operating system shutdown. Use the front USB connectors for devices that you connect occasionally, such as joysticks or cameras, or for bootable USB devices (see "System Setup Options" on page 109 for more information on booting to a USB device). It is recommended that you use the back USB connectors for devices that typically remain connected, such as printers and keyboards. For adequate cooling, do not block any of the vents. NOTICE: Ensure that there is a minimum of two inches of space between all vents and any object near these vents. NOTICE: Keep the vent area clean and dust-free to ensure that the computer is adequately ventilated. Use only a dry cloth to clean the vent area to avoid water damage to the computer. 62 Removing and Installing Parts

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62
Removing and Installing Parts
8
diagnostic lights (4)
Use the lights to help you troubleshoot a computer problem
based on the diagnostic code. For more information, see
"Diagnostic Lights" on page 47.
9
hard-drive activity light
The hard drive activity light is on when the computer reads
data from or writes data to the hard drive. The light might also
be on when a device such as a CD player is operating.
10
power button,
power light
Press the power button to turn on the computer. The light in
the center of this button indicates power state. See
"Specifications" on page 103 for more information.
NOTICE:
To avoid losing data, do not use the power button
to turn off the computer. Instead, perform an operating
system shutdown.
11
USB 2.0 connectors (2)
Use the front USB connectors for devices that you connect
occasionally, such as joysticks or cameras, or for bootable USB
devices (see "System Setup Options" on page 109 for more
information on booting to a USB device). It is recommended
that you use the back USB connectors for devices that typically
remain connected, such as printers and keyboards.
12
vents
For adequate cooling, do not block any of the vents.
NOTICE:
Ensure that there is a minimum of two inches of
space between all vents and any object near these vents.
NOTICE:
Keep the vent area clean and dust-free to ensure
that the computer is adequately ventilated. Use only a dry
cloth to clean the vent area to avoid water damage to
the computer.