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Installing Upgrades on the System Board 2-3

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Brace the chassis to prevent it from moving while you push in the cover release

latch.

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Replace the computer cover on a desktop or mini tower chassis as follows:

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Figures 2-2 and 2-3 show the mini tower and desktop chassis with their covers

removed as an aid in locating internal features and components.

When you look inside your computer, note the

coming from the

power supply. These cables supply power to the system board, to internal driv es , a nd

to certain expansion cards that connect to external devices.

The flat ribbon cables are the

for internal drives. An interface cable con-

nects a drive to an interface connector on the system board or on an expansion card.

The

—the large printed circuit board mounted vertically in the bot tom half

of the mini tower chassis or secured to the bottom of the desktop chassis—holds the

computer’s control circuitry and other electronic components. Some hardware

options are installed directly onto the system board.