Asus A7N8X-VM 400 Motherboard DIY Troubleshooting Guide - Page 26

1.12 Connectors This section describes and illustrates the connectors on the motherboard. 1. IDE connectors (40-1 pin PRI_IDE, SEC_IDE) This connector supports the provided UltraDMA133 IDE cable. Connect the cable's blue connector to the primary (recommended) or secondary IDE connector, then connect the gray connector to the UltraDMA133 master device (hard disk drive) and the black connector to the UltraDMA133 slave device (hard disk drive). • Pin 20 on each IDE connector is removed to match the covered hole on the UltraDMA cable connector. This prevents incorrect orientation when you connect the cables. • For UltraDMA133 IDE devices, use a 40-pin 80-conductor cable. A7N8X-VM NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1. SEC_IDE PRI_IDE A7N8X-VM/400 IDE Connectors PIN 1 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 cable connectors with a closed pin 5 slot.) FLOPPY1 A7N8X-VM NOTE: Orient the red markings on the floppy ribbon cable to PIN 1 PIN 1 A7N8X-VM/400 Floppy Disk Drive Connector 1-16 Chapter 1: Product introduction