Ultra2 SCSI – Terms & Terminology
Data transfers 40 megabytes per second, first defined in SPI-2, below defines how it is used in the different generations of the SCSI standards.
SCSI SPI-2 (SCSI Parallel Interface)
8 bit SCSI asynchronous commands with Synchronous data transfer rates up to 40 megabytes per second. LVD (Low Voltage Differential) and Differential (HVD – High Voltage differential) bus transceivers based on EIA 485 allowed in SCSI SPI-2.
Note: Currently all the implementations have been LVD SCSI, wide. The HVD transceivers are not available for Fast-40 speeds.