Apple Studio Display brightness adjustment from Windows
Normally the Apple Studio Display requires macOS to adjust the brightness. When plugging a Windows PC into the display, the brightness is locked at the last setting. If the power to the Studio Display is lost, the brightness defaults to maximum.
A solution is the tiny utility studio-brightness, where the release studio-brightness.exe can be downloaded from the Releases, or the program can be built from source. The keyboard is then used to adjust the brightness of the Apple Studio Display from Windows.