Asus P4SGX-MX Motherboard DIY Troubleshooting Guide - Page 27
COM1 connector 10-1 pin COM1, ATX power connectors 20-pin ATXPWR1, 4-pin ATX12V1
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3. COM1 connector (10-1 pin COM1) This connector accommodates a serial port using an optional serial port bracket. Connect the bracket cable to this connector then install the bracket into a slot opening at the back of the system chassis. COM1 PIN 1 ® P4SGX-MX P4SGX-MX COM1 Connector 4. ATX power connectors (20-pin ATXPWR1, 4-pin ATX12V1) These connectors connect to an ATX 12V power supply. The plugs from the power supply 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 ATXPWR1 connector, this motherboard requires that you connect the 4-pin ATX +12V power plug to provide sufficient power to the CPU. Make sure that your ATX 12V power supply can provide 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. ATXPWR1 +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC +12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC ® P4SGX-MX ATX12V1 +12V DC P4SGX-MX ATX Power Connectors COM +12V DC COM ASUS P4SGX-MX motherboard user guide 1-17