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[ The PC Guide | Systems and Components Reference Guide | System Case | Parts of the System Case ]

Power Supply and Accessories

The power supply often comes with the case, even though it isn't really part of the case. The power supply comes with an integrated fan, secured to the back of the case in AT form factor supplies, or the front (to blow into the case) for most ATX supplies. The power supply is discussed in its own section here.

A microATX/SFX power supply.

Original image AOpen
Image used with permission.

The power switch for AT and earlier form factor cases is really part of the power supply; for ATX, NLX and WTX form factor cases it is a separate component attached to the case. The switch on most modern PCs is mounted just behind a plastic button that is accessible from the exterior of the case. Most cases also come with a standard power cord, usually black, to plug the power supply into the wall.

Note: Not all cases come with a power supply. Don't assume that a more expensive case will have a power supply included and a cheaper one won't, because often, it is the exact opposite. (Those who care about getting a good power supply, an important but oft-ignored component, often prefer to purchase it separately.) Be sure of what you are buying!

Next: LEDs, Speaker and Connecting Wires


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