Asus P5QC - Manual (Page 55)

ASUS P5QC 2-29
5. Silicon Image ® Sil5723 Serial ATA connectors
(7-pin SATA_E1 [orange]; SATA_E2 [white])
These connectors are for the Serial ATA signal cables for Serial ATA hard
disk drives. If you installed Serial ATA hard disk drives, you can create a EZ
Backup or a Super Speed configuration with the Drive Xpert Technology
through the onboard Silicon Image ® SIL5723 controller.
Before using the Drive Xpert technology, make sure that you have connected
the SATA signal cables and installed SATA hard disk drives.
Refer to 4.3.11 ASUS Drive Xpert for detailed application instructions.
• The SATA_E1 (orange) and SATA_E2 (white) ports are for SATA hard
drives only. ATAPI device is not supported.
• Make necessary backup before using the Drive Xpert function:
All original data of the SATA_E2 (white) hard drive will be erased for EZ
Backup setup.
All original data of the two hard drives will be erased for Super Speed
setup.