Asus a7n8xx Motherboard DIY Troubleshooting Guide - Page 23

2. Floppy disk drive connector (34-1 pin FLOPPY1) This connector supports the provided floppy drive ribbon cable. After connecting one end to the motherboard, connect the other end to the floppy drive. (Pin 5 is removed to prevent incorrect insertion when using ribbon cables with pin 5 plug). FLOPPY1 ® A7N8X-X NOTE: Orient the red markings on the floppy ribbon cable to PIN 1 PIN 1 A7N8X-X Floppy Disk Drive Connector 3. ATX power connectors (20-pin ATXPWR1) 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. ATXPWR1 ® A7N8X-X +3.3VDC -12.0VDC COM PS_ON# COM COM COM -5.0VDC +5.0VDC +5.0VDC A7N8X-X ATX Power Connector +3.3VDC +3.3VDC COM +5.0VDC COM +5.0VDC COM PWR_OK +5VSB +12.0VDC If you will need to replace the power supply in the future, make sure that your new 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. ASUS A7N8X-X Motherboard 1-13