Asus A7V8X - Manual (Page 46)

2-20 Chapter 2: Hardware information
4. RAID ATA/133/100/66/33 connector (40-1 pin PRI_RAID)
This connector supports either RAID 0 or RAID 1 configuration through
the onboard Serial ATA controller chip. You can use the RAID feature to
set up a disk array configuration and to support additional IDE devices.
You can install a hard disk (master mode only) with this connector.
Important notes on the RAID feature:
1. By default, the drives that you connect to the PRI_RAID
connectors follow the ATA133/100/66/33 protocol as
independent drives, not as a disk array.
2. The connector does not support ATAPI devices such as
CD-ROMs, DVD-ROMs, etc.
3. For RAID 0, you may choose any two connectors of Parallel
ATA and Serial ATA connectors. For RAID 1, you may choose
any two or three connectors of Parallel ATA and Serial ATA
connectors.
A7V8X ®
A7V8X PRI_RAID Connectors
NOTE: Orient the red markings
(usually zigzag) on the IDE
ribbon cable to PIN 1.
PRI_RAID1
PIN 1