I have an old Fujitsu ScanSnap S510M scanner that works perfectly well from a hardware perspective. However, as of my upgrade to macOS Catalina, the software no longer works, which effectively bricks it. Per Fujitsu's support page on the question:
The ScanSnap software (*) is not available on macOS 10.15 Catalina. To keep using your ScanSnap, use it on the current version of macOS. When you update your macOS, please consider purchasing a ScanSnap that is currently available.
Details
The ScanSnap software (*) is not available on the macOS as it does not support any 32-bit applications.(No further updates will be provided to the ScanSnap software.)
If you will use macOS 10.13 or earlier, you can keep using ScanSnap S510M on the OS. When you use macOS 10.14 or later, please consider purchasing a ScanSnap that is currently available.
(*) e.g. ScanSnap Manager
Is there any way to keep using ScanSnap Manager S510M in macOS Catalina?