Seagate ST3750528AS 750GB Hard Drive 750GB 7200RPM 32MB Buffer, Serial ATA II/300, 3.5inch, Seagate Barracuda 7200.12. It is not necessary to set any jumpers, terminators, or other settings on this drive for proper operation. The jumper block adjacent to the SATA interface connector on SATA 150MB/s drives is for factory use only. The jumper block adjacent to the SATA interface connector on SATA 300MB/s drives can be used to force the drive into SATA 150MB/s mode. With a Serial ATA interface, each disk drive has cable that connects directly to a Serial ATA host adapter/Serial ATA port on your motherboard.