This is to clarify when to use terminators when connecting a Macintosh II
or Mac SE to a SCSI drive. The information on EXTERNAL drives applies to the
Macintosh Plus as well.
Mac II or Mac SE with 40MB Internal Drive
-------------------------------------
The internal 40MB drive itself is automatically terminated. When connecting
external SCSI devices, you need a terminator at the end of the chain.
- Mac II/SE + internal 40MB
no terminator necessary
- Mac II/SE + internal 40MB + external SCSI
terminator at external SCSI
- Mac II/SE + internal 40MB + external SCSI ... external SCSI
terminator at end of chain
Mac II or Mac SE without 40MB Internal Drive
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There must be at least one terminator between the Mac II/SE and the first
SCSI device, and one more at the end of the line if there is more than one
SCSI device.
- Mac II/SE + external SCSI
terminator at external SCSI
- Mac II/SE + external SCSI ... external SCSI
terminator at beginning and end of chain
Again, the information on external drives applies to the Macintosh Plus
as well.