Asus P4PE User Manual page 47

5. Serial ATA connectors (7-pin PRI_SATA1, SEC_SATA2)
These next generation connectors support the thin Serial ATA cables
for primary internal storage devices. The current Serial ATA interface
allows up to 150 MB/s data transfer rate, faster than the standard
parallel ATA with 133 MB/s (Ultra ATA/133).
P4PE
P4PE SATA Connectors
Important notes on Serial ATA solution:
• The low-voltage requirement of 500 millivolts (mV) peak-to-peak
will effectively minimize, if not totally eliminate, the 5V signalling
requirement in the current Parallel ATA interface.
• The Serial ATA cable is smaller and more flexible allowing easier
routing inside the chassis. The lower pin count of the Serial ATA
cable eliminates the problem caused by the wide, flat ribbon cables
of the Parallel ATA interface.
ASUS P4PE motherboard user guide
SEC_SATA
®
PRI_SATA
2-21