SCSI-1
- Narrow 8-Bit Data Bus
- Single Ended (SE) or High Voltage Differential (HVD)
- Asynchronous Transfer Rate up to 2.5Mbytes/sec
- Synchronous Transfer Rate up to 5Mbytes/sec
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Fast SCSI / SCSI-2
- Narrow 8-Bit Data Bus
- Single Ended (SE) or High Voltage Differential (HVD)
- Asynchronous Transfer Rate up to 5Mbytes/sec
- Synchronous Transfer Rate up to 10Mbytes/sec
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Fast and Wide SCSI / SCSI-3 / SCSI-3 SPI
- Narrow 8-Bit or Wide 16-Bit Data Bus
- Single Ended (SE) or High Voltage Differential (HVD)
- Asynchronous Transfer Rate up to 10Mbytes/sec
- Synchronous Transfer Rate up to 20Mbytes/sec
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Fast-20 SCSI / Ultra SCSI
- Narrow 8-Bit or Wide 16-Bit Data Bus
- Single Ended (SE) or High Voltage Differential (HVD)
- Asynchronous Transfer Rate up to 20Mbytes/sec
- Synchronous Transfer Rate up to 40Mbytes/sec
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Fast-40 SCSI / Ultra-2 SCSI / SPI-2
- Narrow 8-Bit or Wide 16-Bit Data Bus
- Low Voltage Differential (LVD)
- Backwards compatable with Single Ended (SE)
- Asynchronous Transfer Rate up to 40Mbytes/sec
- Synchronous Transfer Rate up to 80Mbytes/sec
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Fast-80 SCSI / Ultra-3 SCSI / Ultra-160 SCSI / SPI-3
- Wide 16-Bit Data Bus
- Low Voltage Differential (LVD)
- Backwards compatable with Single Ended (SE)
- Synchronous Transfer Rate up to 160Mbytes/sec
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Fast-160 SCSI / Ultra-320 SCSI / SPI-4
- Wide 16-Bit Data Bus
- Low Voltage Differential (LVD)
- Backwards compatable with Single Ended (SE)
- Synchronous Transfer Rate up to 320Mbytes/sec
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