3-6
Chapter 3: Motherboard info
3
IDE connector (40-1 pin PRI_IDE)
The onboard IDE connectors are for Ultra DMA 133/100/66 signal cables.
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 devices.
• 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.
M 3 R 7 8 L
R
M3R78L IDE Connector
NOTE:
Orient the red markings
(usually zigzag) on the ID
ribbon cable to PIN 1.
PRI_IDE
PIN1
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
4. CPU Fan connector (3-pin CPU_FAN)
The fan connectors support cooling fans of 350 mA~740 mA (8.88 W max.)
or a total of 1 A~2.22 A (26.64 W max.) at +12V. Connect the fan cables to
the fan connectors on the motherboard, ensuring that the black wire of each
cable matches the ground pin of the connector.
