SCSI active termination

The SCSI bus (small computer systems interface) is a high-speed bidirectional parallel bus used mainly for connecting 'intelligent' peripheral devices to a CPU. The bus is the de facto standard in the Apple computer environment, where it is used to connect devices like CD-ROM readers, scanners, and internal as weIl as hard disks. The SCSI bus has also found wide acceptance in the IBM PC world, where the main application is with large hard disks, SCSI hard disks feature a 'software' type identifier, and require an appropriate hard disk controller and associated software.