Asus P4SDR-VM Motherboard DIY Troubleshooting Guide - Page 42

4. ATX power connectors (20-pin ATXPWR, 4-pin ATX12V) 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 ATXPWR 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. ATXPWR +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC Pin 1 +12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC P4SDR-VM ® ATX12V +12V DC COM Pin 1 +12V DC COM P4SDR-VM ATX Power Connectors 5. USB headers (10-1 pin USB2, USB3) If the USB ports on the rear panel are inadequate, two USB headers are available for additional USB ports. The USB headers complies with USB 1.1 specification. USB Power USB P3USB P3+ GND NC P4SDR-VM ® 2 10 USB2 USB3 1 9 P4SDR-VM USB Header USB Power USB P4USB P4+ GND 2-20 Chapter 2: Hardware information