Installing the ScanSnap is possible but Fujitsu’s download page says it’s not supported.

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The Software Downloads: ScanSnap S510 download page shows no options for MacOS support (to include Monterey and beyond). After a bit of research, I was able to find this page that explains that the SnapScan 1300 Software Package works with the S510. I gave it a try after no other leads and it works!! I tested and scanned a few documents and it worked as expected for me. I was even able to scan directly to Google Drive. To be clear, I currently have Monterey 12.2 installed.

Download the “SnapScan 1300 Software Package” here:

https://scansnap.fujitsu.com/global/dl/setup/m-inst2-v7.html