Polaroid DCM 2 Online - Manual (Page 139)

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Changing Sync Transfer Rate on Some Adaptec SCSI Adapters
If your system has an Adaptec 2940 or 3940 SCSI host adapter, it may not recognize a
SCSI device if the minimum sync transfer rate or other values are incorrectly set.
To change the minimum sync transfer rate and other important values for these SCSI
adapters:
1 Restart your computer and wait for the following message to appear:
Press for SCSISelect (TM) Utility!
2 Immediately press the Control key and A to display the SCSISelect menu.
3 Select Configure/View Host Adapter Settings.