HP Dc7900 Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 27

CAUTION, Opening the Expansion Slot Retainer

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CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer. 5. Remove the computer access panel. 6. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis. 7. Press straight down on the two green thumb tabs inside the chassis (1) and rotate the expansion card retention latch up (2). Figure 2-10 Opening the Expansion Slot Retainer 8. Before installing an expansion card, remove the expansion slot cover or the existing expansion card. ENWW Removing or Installing an Expansion Card 21

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CAUTION:
Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
5.
Remove the computer access panel.
6.
Locate the correct vacant expansion socket on the system board and the corresponding expansion
slot on the back of the computer chassis.
7.
Press straight down on the two green thumb tabs inside the chassis (1) and rotate the expansion
card retention latch up (2).
Figure 2-10
Opening the Expansion Slot Retainer
8.
Before installing an expansion card, remove the expansion slot cover or the existing expansion
card.
ENWW
Removing or Installing an Expansion Card
21