Filter
Top Products
4. 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 congure your device(s).
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
• 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.
5. Optical drive audio in connector (4-pin CD)
This connector allows you to receive stereo audio input from sound sources such as a
CD-ROM, TV tuner, or MPEG card.
M3N78-CM
R
M3N78-CM
IDE Connector
PRI_IDE
M3N78-CM
R
M3N78-CM
Internal Audio Connector
CD
(black)
RightAudio Channel
LeftAudio Channel
Ground
Ground
1-20 ASUS M3N78-CM