HP ProDesk 400 G4 Base Model Microtower PC Bedienungsanleitung PDF herunterladen (Seite 22)

Removing or installing an expansion card

The computer has three PCI Express x1 expansion sockets and one PCI Express x16 expansion socket.

NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 socket.

For dual graphics card congurations, the rst (primary) card must be installed in the PCI Express x16 socket.

To remove, replace, or add an expansion card:

1. Remove/disengage any security devices that prohibit opening the computer.

2. Remove all removable media, such as compact discs or USB ash drives, from the computer.

3. Turn o the computer properly through the operating system, then turn o any external devices.

4. Disconnect the power cord from the power outlet and disconnect any external devices.

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. See Removing the computer access panel on page 6.

6. Rotate the slot cover release latch to the open position.

7. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot

on the back of the computer chassis.

8. Before installing an expansion card, remove the expansion slot cover or the existing expansion card.

NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to

the expansion card.

a. If you are installing an expansion card in a vacant socket, you must slide one of the expansion slot

covers up and out of the chassis or use a at-bladed screwdriver to pry out one of the metal

shields on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield

for the expansion card you are installing.

14 Chapter 2 Hardware upgrades

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HP ProDesk 400 G4 Base Model Microtower PC Bedienungsanleitung Seite 22