This adapter is on macOS (especially Apple Silicon M1/M2/M3). However, some generic adapters use the Chipset RTL8188EU for which community drivers exist:
Using the manufacturer's website or the chipset manufacturer's website ensures you have the most up-to-date and secure version of the driver.
Yes, on Windows 7 and 8. On Windows 10/11, the hosted network feature is deprecated. Use third-party software like Connectify or MyPublicWiFi.