Low. Many users report that Windows 10 recognizes the device but cannot initialize it. If it works, you will only get basic scanning via the Windows Scan or Windows Fax and Scan app (no advanced buttons or resolution controls).
Legacy scanners often struggle with USB 3.0 ports (blue). If your computer has a USB 2.0 port (black), try plugging the scanner into that instead for better stability. How to use OLD scanner without driver in windows umax 5800 scanner driver for windows 10 new