Asus P4SDR-VM Motherboard DIY Troubleshooting Guide - Page 40
Connectors
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2.8 Connectors This section describes and illustrates the internal connectors on the motherboard. Always connect ribbon cables with the red stripe to Pin 1 on the connectors. Pin 1 is usually on the side closest to the power connector on hard drives and CD-ROM drives, but may be on the opposite side on floppy disk drives. 1. Hard disk activity LED (2-pin IDELED1) This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up. P4SDR-VM ® TIP: If the case-mounted LED does not light up, try reversing the 2-pin plug. IDELED1 P4SDR-VM IDE Activity LED 2. Floppy disk drive connector (34-1 pin FLOPPY) 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). P4SDR-VM ® NOTE: Orient the red markings on the floppy ribbon cable to PIN 1. PIN 1 P4SDR-VM Floppy Disk Drive Connector 2-18 Chapter 2: Hardware information