Driver can be downloaded below for the ScanSnap iX500. This scanner like other Fujitsu document scanners is no longer supported, however with the official drivers this device can be used on most versions of Windows Including Windows 11, Windows 10, Windows 8.1, Windows 7 64bit (x64) and 32bit (x86) editions. Links to download the official drivers are below.
To Install the drivers using Windows 11/10 for example simply downloaded the WinSSHOfflineInstaller_2_20_0.exe file below, (it is a large file) and save to a location where you can run the package as an Administrator.
ScanSnap Home Offline Installer 2.20.0 Setup Program
File: WinSSHOfflineInstaller_2_20_0.exe
d1bcbe082e09f26f6bf17c1c8d4766d72796a641722ffe89dbdbbeabdc13985b
ScanSnap Home Offline Installer 2.20.0 Setup Program
File: MacSSHOfflineInstaller_2_20_0.dmg
887fc9b1b80c878d1aec20214aace40b65270da4d7461b4793a2214234a78272
(older version) ScanSnap Home Offline Installer 2.0.30 Setup Program
File: WinSSHOfflineInstaller_2_0_30.exe
82bb315ccf2c58c802cb41856947a98788ba4644f6d694024461d35ea4937b6d
(older version)ScanSnap Home Offline Installer 2.0.30 Setup Program
File: MacSSHOfflineInstaller_2_0_30.dmg
2e546eb922e4fc547395f66a02ba35f0ce8133ea858f29a0fa63b6f559025abe
(older version) ScanSnap Home Offline Installer 1.3.1 Setup Program
File: WinSSHOfflineInstaller_1_3_1.exe
1b5f72fff51f07f9672949140d1c104a0d9d04c0f40873749e19c0065df7ac06
(older version) ScanSnap Home Offline Installer 1.3.0 Setup Program
File: MacSSHOfflineInstaller_1_3_0.dmg
91f8797f71f5ba3850f8f31d35c753261e88b58340e4745fd15f3bef1eedef85