Ultra2 SCSI

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.

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.