In case you're not fluent in Windows' lingo, the system tray is the right part of the taskbar where all the little icons of apps running in the background reside. Normally, the system tray only shows ...

The simplified Windows 11 system tray design was close to being launched, but Microsoft backed out at the last minute.

Clicking the Tune icon will still give you extra information about the site's HTTPS certificate, plus a few other site-specific settings like those for notifications and location sharing.