Asus P4RD1-MX - Manual (Page 34)

1-22 Chapter 1: Product introduction
2. IDE connectors (40-1 pin PRI_IDE, SEC_IDE)
These connectors are for Ultra DMA 133/100/66 signal cables.
The Ultra DMA 133/100/66 signal cable has three connectors: a
blue connector for the primary IDE connector on the motherboard,
a black connector for an Ultra DMA 133/100/66 IDE slave device
(optical drive/hard disk drive), and a gray connector for an Ultra DMA
133/100/66 IDE master device (hard disk drive). If you install two
hard disk drives to the same cable, you must configure the second
drive as a slave device by setting its jumper accordingly. Refer to the
hard disk documentation for the jumper settings.
• 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.
P4RD1-MX
®
P4RD1-MX IDE connector
NOTE: Orient the red markings
(usually zigzag) on the IDE
ribbon cable to PIN 1. PRI_IDE SEC_IDE
1 1