Asus M3N-HD - Manual (Page 50)

2-24 Chapter 2: Hardware information
2.7.2 Internal connectors
1. Floppy disk drive connector (34-1 pin FLOPPY)
This connector is for the provided floppy disk drive (FDD) signal cable. Insert
one end of the cable to this connector, then connect the other end to the
signal connector at the back of the floppy disk drive.
Pin 5 on the connector is removed to prevent incorrect cable connection when
using a FDD cable with a covered Pin 5.
M3N-HD/HDMI
®
FLOPPY
NOTE:Orient the red markings
on the floppy ribbon cable to PIN 1.
PIN1
M3N-HD/HDMI Floppy disk drive connector