Dell OptiPlex 755, Quick Reference Manual

Page: 55 / 622

Quick Reference Guide
55
When you connect two monitors, the video driver will detect this connection
and activate the multimonitor functionality.
Removing the Computer Cover
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide .
NOTICE:
To prevent static damage to components inside your computer, discharge
static electricity from your body before you touch any of your computer’s electronic
components. You can do so by touching an unpainted metal surface on the
computer chassis.
1
Follow the procedures in "Before You Begin" on page 13.
2
Remove the computer cover (see "Removing the Computer Cover" on
page 55).
NOTICE:
Before touching anything inside your computer, ground yourself by
touching an unpainted metal surface. While you work, periodically touch an
unpainted metal surface to dissipate any static electricity that could harm internal
components.
3
If applicable, remove the cable cover, (see "Cable Cover (Optional)" on
page 57).
4
Remove the computer cover:
a
Rotate the cover release knob in a clockwise direction, as shown in the
illustration.
b
Slide the computer cover forward by 1 cm (½ inch), or until it stops,
and then raise the cover.
CAUTION:
Graphics card heat sinks can become very hot during normal
operation. Ensure that a graphics card heat sink has had sufficient time to cool
before you touch it.