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			<title>Macintosh SCSI Termination: A Brief Explanation</title><body class="ac-gn-current-support">
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<h1 id="main-title">Macintosh SCSI Termination: A Brief Explanation</h1>
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<FONT SIZE=4> <BR>
Is the Macintosh SCSI connector terminated on the logic board?  In other words,<BR>
are both ends of the chain terminated or only the last peripheral?<BR>
 <BR>
</FONT></div></div> <!--  attr Symptom  --></div> <!--  truncate --></div> <!--  intro-container --><div class="clear"> </div>
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  <div class="attr SUMMARY">
The Macintosh systems that have SCSI ports are not terminated on the logic<BR>
board.  One system, the Macintosh IIfx, when shipped without an internal hard<BR>
drive, comes with a terminator plugged into the internal SCSI connector.  If an<BR>
internal hard drive is installed in a Macintosh system, it should be<BR>
terminated.  The internal hard drive is the first device in a SCSI chain. The<BR>
last device in the SCSI chain should also be terminated.<BR>
 <BR>
Typically, a Macintosh system with only one SCSI device needs only one<BR>
terminator.  The exception to this is the Macintosh IIfx when it has a single<BR>
SCSI device attached on the external SCSI connector.  In this case, there<BR>
should be the internal terminator that came with Macintosh IIfx and a<BR>
terminator on the external SCSI device.<BR>
 <BR>
<BR></div>
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<div class="mod-date">Published Date: Feb 18, 2012</div>
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