Ratoc Systems U2SCXU - Manual (Page 53)

Macintosh
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3-2-1.Installing utility on MacOS 9.x
You can configure settings for a SCSI device or update the firmware on the
U2SCXU with this utility. When you update the firmware, don’t remove the
SCSI device from the U2SCXU. You need to keep connecting the U2SCXU
to the SCSI device.
In order to use this utility, you need to duplicate [Mac OS Base] with
[Extensions Manager] first. Secondly, you need to install the utility on Mac
and execute it. Thirdly, you need to go back from [Mac OS Base] to your
settings. In order to use this utility, follow the steps through:
1)Open [Extension Manager] at [Control Panels].
2)Set [Selected Set] to [Mac OS Base] and click [Duplicate Set].