Asus Crosshair III Formula - Manual (Page 58)

2.7.2 Internal connectors
1. IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for the 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.
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 all other device jumpers
have the same setting.
2-30 Chapter 2: Hardware information