Asus RS724Q-E6/RS12 - Manual (Page 57)

ASUS RS720Q-E6/RS12, RS724Q-E6/RS12 4-11
4.3 Internal connectors
1. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4)
Supported by the Intel ® ICH10R chipset, these connectors are for the Serial
ATA signal cables for Serial ATA hard disk drives that allows up to 3Gb/s of
data transfer rate.
If you installed Serial ATA hard disk drives, you can create a RAID 0, RAID 1,
or RAID 5 configuration.
The actual data transfer rate depends on the speed of Serial ATA hard disks
installed.