Asus Z9PH-D16 - Manual (Page 44)

2-26 Chapter 2: Hardware information
The actual data transfer rate depends on the speed of Serial ATA hard disks
installed.
2.7.2 Internal connectors
1. Serial ATA connectors (7-pin SATA1-2 [Light blue], SATA3–4 [Black])
(SATA 6Gb/s: 7-pin SATA1-2 [Light blue])
(SATA 3Gb/s: 7-pin SATA3-4 [Black])
These connectors, controlled by Intel
® C602 chipset, are for the Serial ATA
signal cables for Serial ATA hard disk drives.