Windows 11/10 would usually find it and list it under Settings > Devices ... make sure the scanner is physically plugged into a power source and connected to the computer over the USB plug.
If you need to scan documents onto your Mac computer, you're in luck ... Keep in mind that if you want to use different settings (like color for some pages and black-and-white for the rest ...
Open the Settings app and tap Camera ... How to scan a QR code on a Mac It isn't often you see people scanning QR codes with their computer, but if your Mac has a camera it can be easily done.