Dell OptiPlex Gxi - Manual (Page 59)

Working Inside Your Computer 5-3
3. Replace the cover.
Facing the left side of the computer, hold the cover at
a slight angle as shown in Figure 5-3, and then align
the top of the cover with the top of the chassis. Insert
the tabs on the cover into the recessed slots on the
computer chassis so that the tabs catch the hooks
inside the slots.
Pivot the cover down toward the bottom of the chas-
sis and into position. Make sure the securing hooks
at the bottom of the cover click into place.
Figure 5-3. Replacing the Computer Cover
4. If you are using a padlock to secure your system,
reinstall the padlock.
I
nside Your Computer
Figure 5-4 shows a side view of your computer to help
you orient yourself when installing hardware options.
Unless otherwise specified, locations or directions rela-
tive to the computer are as shown.
Figure 5-4. Computer Orientation View
Figure 5-5 shows your computer with its cover removed.
Refer to this illustration to locate interior features and
components discussed in this guide.
When you look inside your computer, note the direct cur-
rent (DC) power cables coming from the power supply.
These cables supply power to the system board; to inter-
nal diskette drives, hard-disk drives, and tape drives; and
to certain expansion cards that connect to external
peripherals.
The flat ribbon cable in Figure 5-5 is typical of the inter-
face cables for internal drives. An interface cable
connects a drive to a connector on the system board or on
an expansion card.
The system board—the large printed circuit board
mounted vertically inside the chassis—holds the com-
puter’s control circuitry and other electronic components.
Some hardware options are installed directly onto the
system board. The riser board at the bottom of the chassis
contains the expansion-card connectors.
tab
recessed
slot
front
back
drive
cage
power
supply
internal drive
bracket
expansion-
card cage
top
system
board
bottom