Asus M3N78 SE User Manual page 28

2. Speaker connector (4- pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
M3N78 SE
M3N78 SE Speaker Out Connector
3. IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for 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).
Single device
Two devices
• Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
If any device jumper is set as "Cable-Select", ensure that all other device jumpers have the
same setting.
M3N78 SE
M3N78 SE IDE connector
1-18
PIN 1
Drive jumper setting
Cable-Select or Master
Cable-Select
cable connector. This prevents incorrect insertion when you connect the IDE cable.
SPEAKER
Mode of device(s)
Master
Slave
PRI_IDE
PIN1
NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.
Cable connector
- Black
Master Black
Slave Gray
Master
Black or gray
Slave
Chapter 1: Product introduction