Page "Western Digital Raptor" Paragraph 2

Although pitched as an “ enterprise-class drive ”, it won favour with the PC gaming and enthusiast community because the drive was capable of speeds usually found only on more expensive SCSI drives.

Adopting the SATA interface meant that it could be used easily on all modern motherboards with no separate host adapter card.

Also, integration was made easier still by the inclusion of a standard 4-pin Molex power connector in addition to the standard SATA power port.