All, Doc writes: I looked at the DEC StorageWorks documentation, and it seems that I will need the following: :: DWZZB is a Fast Wide Differential to Fast Wide Single-Ended SCSI :: bus extender and signal converter. It is 8 or 16 bit Fast Wide :: Differential SCSI on one side and an 8 or 16 bit single-ended :: SCSI on the other side. DWZZB is SCSI-3 (ANSI X3T9.2-10R3) :: compliant, can handle data rates up to 20 (16-bit) MB per second, :: and operates transparently to SCSI bus. The product fully supports :: all the latest SCSI-3 bus phases as well as all earlier standard :: SCSI compatible implementations, back to SASI. :: :: DWZZB is bi-directional in operation and can be cascaded. A :: maximum of two can be attached to a bus in a series. Termination :: on the single-ended side is user selectable. The 16-bit fast wide :: differential side features user removable resistors. DWZZB handles :: the more powerful 16-bit SCSI buses as well as 8-bit buses and :: handles data rates up to 20 MB per second on Fast SCSI. It is :: fully compatible with 2- to 5 MB per second data rates of earlier :: SCSI interconnects. It extends SCSI buses from 3 or 6 meters to 25 :: meters using synchronous transfers. :: :: DWZZB can be used to connect the widening range of available :: differential SCSI storage devices and subsystems to single-ended :: hosts. No changes are required to existing devices or software; :: the DWZZB does not occupy a SCSI bus node According to the document, I'd need the :: DWZZB-AA Standalone Product-includes built-in universal power :: supply for general purpose SCSI bus length and signal :: conversion needs, can be used with any SCSI-2 :: compatible device. or the :: DWZZB-MA Module for OEM use-includes basic module that operates :: at 20 MB per second and is fully ANSI compliant for :: embedded applications (power suppler and packaging to :: be ordered separately by OEM or system integrator). Does anyone have some of these available? Thanks bunches, Fred