External links

T10 Technical Committee site provides more information about I/O Interfaces, especially SCSI, SCSI-2, and SCSI-3 including SPI-2 (Fast-40 or Ultra2 SCSI), Low Voltage Differential (LVD), SPI-3 (Ultra3 SCSI or Ultra160), SPI-4 (Ultra320), SPI-5 (Ultra640), Serial Attached SCSI (SAS).