Asus P4B-FX P4B-FX User Manual - Page 44
Power Supply Connectors
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7. Power supply connectors (20-pin ATXPWR, 4-pin ATX+12V) These connectors connect the power plugs from an ATX +12V power supply. The power plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. In addition to the 20-pin ATXPWR connector, this motherboard requires that you connect the 4-pin ATX +12V power plug to provide power to the CPU. 1. Make sure that your system has an ATX 12V power supply designed for the P4 CPU. This type of power supply should have a 4-pin +12V power plug. 2. Make sure that the power supply can provide at least 8A on the +12V lead and at least 1A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate. ATXPWR ATX12V +12V DC COM Pin 1 +12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC P4B-FX Pin 1 +12V DC COM P4B-FX ATX Power Connectors Figure 2-31 Power Supply Connectors +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC 2-24 Chapter 2: Hardware information