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KB_PWR Enabled Disabled (Default) P4B-FX P4B-FX Keyboard Power Up AUD_EN1 Enabled Disabled P4B-FX (Default) P4B-FX Audio Setting 2-18...
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LAN_EN P4B-FX Enabled Disabled (Default) P4B-FX LAN Setting CLRTC Intel I/O Controller P4B-FX (ICH2) Short solder points P4B-FX Clear RTC RAM to Clear CMOS 2-19...
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IDELED P4B-FX TIP: If the case-mounted LED does not light up, try reversing the 2-pin plug. P4B-FX IDE Activity LED 2-20...
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Primary S e c o n d a r y Master UltraDMA/100/66 UltraDMA/100/ Secondary NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1. P4B-FX Pin 1 P4B-FX IDE Connectors 2-21...
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FLOPPY NOTE: Orient the red markings on the floppy ribbon cable to PIN 1. P4B-FX PIN 1 P4B-FX Floppy Disk Drive Connector CPUFAN SYSTEM P4B-FX P4B-FX 12-Volt Fan Connectors 2-22...
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USB2 P4B-FX P4B-FX USB Header IR_CN Front View Back View IRTX P4B-FX (NC) IRRX P4B-FX Infrared Module Connector 2-23...
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Speaker Keyboard Lock Connector Power LED Reset SW Message LED P4B-FX ATX Power SMI Lead Switch* Requires an ATX power supply. P4B-FX System Panel Connectors • • • • 2-27...