Adaptec USBConnect2000, User Manual

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9
Understanding SCSI
Connector Types
Several different types of SCSI connectors are used on SCSI devices,
and each type requires a different kind of cable. The following three
diagrams illustrate the different kinds of SCSI connectors:
The total length of cabling on the SCSI bus should not exceed the
maximum lengths listed in the following table:
Maximum Cable Lengths
Max Devices Supported
Data Transfer Rate
Max Cable Length
7 Fast SCSI
(10 MBytes/sec)
3 m (9.8 ft.)
7 5 MBytes/sec
(Asynchronous or Synchro-
nous)
6 m (19.7 ft.)
SCSI-2 High-density 50-pin Connector
Typically used with high-performance CD-ROM drives, hard disk drives, Jaz drives,
and Plug and Play devices.
SCSI-1, Low-density Centronics 50-pin Connector
Used with many CD-ROM drives, hard disk drives, SCSI tape drives, and scanners.
DB25 Connector
Used with Iomega ZIP drives, Syquest EZFlyer, etc.