Opening the computer cover – Dell Dimension 4550 User Manual
Page 83
Adding Parts
83
Opening the Computer Cover
CAUTION: Before you begin any of the procedures in this section,
follow the safety instructions on page 9.
CAUTION: To guard against electrical shock, always unplug your
computer from the electrical outlet before opening the cover.
1
Shut down the computer (see page 33).
NOTICE: To disconnect a network cable, first unplug the cable from your
computer and then unplug it from the network wall jack.
2
Turn off any attached devices and disconnect them from their
electrical outlets.
3
Disconnect the computer power cable from the wall outlet, and then
press the power button to ground the system board.
NOTICE: Ensure that sufficient space exists to support the open cover—at
least 30 cm (1 ft) of desktop space.
4
Lay the computer on its side so that the arrow on the bottom of the
computer points up.
5
Locate the two release buttons shown in the illustration, and then
press the two release buttons as you lift the cover.
release button
arrow
release
button