Asus M3N78-AM - Manual (Page 42)

1-30 Chapter 1: Product introduction
7. IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for an Ultra DMA 133/100/66 signal cable.
There are three connectors on each Ultra DMA 133/100/66 signal cable:
blue, black, and gray. Connect the blue connector to the motherboard’s IDE
connector, then select one of the following modes to configure your device(s).
Pin 20 on the IDE connector is removed to match the covered hole on the Ultra
DMA cable connector. This prevents incorrect insertion when you connect the
IDE cable.
• If any device jumper is set as “Cable-Select,” ensure that all other device
jumpers have the same setting.
• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
Drive jumper setting
Mode of
device(s)
Cable connector
Single device Cable-Select or Master - Black
Two devices
Cable-Select
Master Black
Slave Gray
Master Master
Black or gray
Slave Slave
PRI_IDE
NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.
PIN1 M3N78-AM
M3N78-AM IDE connector