ATX Version 3.0 Multi Rail Desktop Platform Power Supply
Fan Requirements - REQUIRED
The fan will draw air from the computer system cavity pressurizing the power supply enclosure. The power supply enclosure shall exhaust the air through a grill located on the rear panel. Refer to Figure 14-4. Moving the fan to the computer system cavity helps to limit the acoustic noise of the unit.
The fan will be 80mm.
To prevent damage to the fan during shipment and handling, the power supply designer should consider recessing the fan mounting, as shown in Figure 14-5.