SCSI WIRING DIAGRAM

SCSI Bus technical Description, SCSI Pinout and SCSI
SCSI Versions: Serial SCSI [SAS] 'Serial Attached SCSI' description my be found on the Serial SCSI page, Serial SCSI replaced parallel SCSI described on this page. Serial SCSI uses Serial ATA [SATA] as the physical layer. The rest of this page describes the different versions of parallel SCSI which are Obsolete]. Because of the high cost of SCSI systems [compared to the IDE interface], SCSI
SCSI - Wikipedia
Initially, the SCSI Parallel Interface (SPI) was the only interface using the SCSI protocol. Its standardization started as a single-ended 8-bit bus in 1986, transferring up to 5 MB/s, and evolved into a low-voltage differential 16-bit bus capable of up to 320 MB/s. The last SPI-5 standard from 2003 also defined a 640 MB/s speed which failed to be realized.
SCSI connector - Wikipedia
A SCSI connector (/ ˈ s k ʌ z i / SKUZ-ee) is used to connect computer parts that use a system called SCSI to communicate with each other. Generally, two connectors, designated male and female, plug together to form a connection which allows two components, such as a computer and a disk drive, to communicate with each other.