Removing or installing an expansion card
The computer has three PCI Express x1 expansion slots and one PCI Express x16 expansion slot.
NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 slots.
For dual graphics card configurations, the first (primary) card must be installed in the PCI Express
x16 slot.
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 flash drives, from the computer.
3. Turn off the computer properly through the operating system, then turn off 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.
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 on the exterior of the chassis (1) and rotate the
expansion card retention latch open (2).
ENWW Removing or installing an expansion card 21
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