I have the ScanMaker i800 plus.
My Mac just doesn't seem to recognize the scanner. I have been on the phone with multiple Apple senior tech reps, emailed back and forth with MicroTek, surfed the web endlessly and still can't seem to nail it down.
When I plug in my scanner to my PC, the PC beeps and scanner comes alive, (it makes noise, lights up, and is ready to rock). When I plug it into my Mac...nothing. Now if I don't plug it into my Mac and click the Scanpotter software I get a message that says "scanner not found." When I plug it in the software launches, (so I know it sees it somehow). When I click preview the screen goes gray, says "processing" for a few seconds and then reverts back to black. No preview. When I hit scan it sends a black box to my desktop destination all while the scanner is dead, (no lights, noise, or movement).
When I go to my system information / USB I see "Microtek" but is says "unrecognized." Also, under system preferences / manners & printers I see my printer and not my scanner and trying to add it doesn't work.