USB scanner not being powered

My Canoscan LIDE 90 USB scanner is not receiving power from my Mac Mini (High Sierra 10.13.6)

I have the most recent drivers for this scanner installed.

System report shows the scanner in the USB section - so it is recognised by the computer, but it won't appear in Image Capture as a device, nor on some 3rd party scanning apps I have tried.

There is no On/Off switch on the scanner but as far as I can tell it is drawing no power

Mac mini, macOS 10.13

Posted on Mar 25, 2019 5:29 PM

Top-ranking reply

den.thed

Level 10

91,990 points

Posted on Mar 25, 2019 9:28 PM

Hmm.... I would try,

connecting the scanner to a different USB port.
using a different USB cord between the scanner and Mac Mini.
connecting the scanner to a different computer to see if it is working.

If the scanner worked with a PC or a different Mac, then I would try resetting the Mac Mini's NVRAM and SMC..

see > Reset NVRAM or PRAM on your Mac - Apple Support

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USB scanner not being powered

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