User Manual

1-18 Chapter 1: Product introduction
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.
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 congure 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.
• 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.
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
M3N78 SE
+5V GND GND Speaker Out
SPEAKER
PIN 1
M3N78 SE Speaker Out Connector
PRI_IDE
NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.
PIN1
M3N78 SE
M3N78 SE IDE connector