Know your gear
Ultra SCSI, is the ever-improving SCSI standards, and is the cable of choice for such peripherals as the Iomega zip drive. It includes specifications for a single-ended as well as a differential bus style. The single-ended is similar to fast SCSI-2, except that it accommodates addressing up to 32 devices over a 16 bit single cable bus. This style also increases data throughput up to 20 Mbps in single-ended applications.