Asus Z87-A - Manual (Page 43)

1-33 Chapter 1: Product introduction
2. Intel Intel ® Z87 Serial ATA 6.0 Gb/s connectors (7-pin SATA6G_1-6 [yellow])
These connectors connect to Serial ATA 6.0 Gb/s hard disk drives via Serial ATA 6.0
Gb/s signal cables.
If you installed Serial ATA hard disk drives, you can create a RAID 0, 1, 5, and 10
configuration with the Intel ® Rapid Storage Technology through the onboard Intel ® Z87
chipset.