Dell GX240 manual 3Open the computer cover

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NOTICE: Before disconnecting a device from the computer, wait 10 to 20 seconds after disconnecting the computer from its electrical outlet. Before removing a component from the system board, verify that the standby power light on the system board has turned off. To locate this light, see “System Board Components.”

1If you are replacing an expansion card, remove the current driver for the expansion card from the operating system.

2Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds.

3Open the computer cover.

4If you have a small desktop computer, remove the expansion-card cage.

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Installing Upgrades