Asus RS926-E7/RS8 - Manual (Page 62)

4-8 Chapter 4: Motherboard information
4.3 Internal connectors
1. Serial ATA 6.0/3.0 Gb/s connectors
(7-pin SATA6G_1-2 [black])
(7-pin SATA3G_3-6 [black])
Supported by the Intel
® C602 Chipset, these connectors are for the Serial ATA
signal cables for Serial ATA hard disk drives that allows up to 6Gb/s of data
transfer rate.
If you installed Serial ATA hard disk drives, you can create a RAID 0, RAID 1,
RAID 10, or RAID 5 configuration.
The actual data transfer rate depends on the speed of Serial ATA hard disks
installed.