<hardware> An extension of SCSI-2 proposed by a group of manufacturers which doubles the transfer speed of Fast-SCSI to give 20MByte/s on an 8-bit connection and 40MByte/s on a 16-bit connection.
(1995-04-19)
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Nearby terms: Ultra64 « Ultra-ATA « Ultra DMA « Ultra-SCSI » Ultrix » um » UMB