Dell Dimension 4200 Solution Manual page 40

40 Adding Parts
CAUTION: Before you begin any of the procedures in this section,
follow the safety instructions on page 7.
Turn off the computer and any attached devices, and disconnect them
1
from their electrical outlets.
NOTICE: To disconnect a network cable, first unplug the cable from your
computer and then unplug it from the network wall jack.
Briefly press the power button.
2
Lay the computer on its side so that the arrow on the bottom of the
3
computer points up.
NOTICE:
Ensure that there is sufficient space to support the open cover—at
least 30 cm (1 ft) of desk top space.
Press the two release buttons and lift the cover.
4
release buttons (2)