Asus P4PE 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). GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXP2 RSATA_RXN2 GND ® P4PE SEC_SATA GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXP1 RSATA_RXN1 GND P4PE SATA Connectors PRI_SATA 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 2-21