EVGA P55 LE User Manual page 17

primary storage devices. The current Serial ATA II interface allows up to
300MB/s data transfer rate.
There are six (6) internal serial ATA connectors on this motherboard. These
connections are designed to be angled to not interfere with any expansions
cards. These connection points support RAID 0, RAID 1, and RAID 10
configurations.
SATA 4 (bottom) SATA 2 (bottom)
SATA 5 (top) SATA 3 (top)
SATA 0 (bottom)
SATA 1 (top)