When you open Device Manager in Windows through Control Panel, you can see all the devices connected to your Windows and (if you are daring) change the configuration information. By default, Windows does not show “all” devices as some of them are hidden. You can view the hidden devices by going to View > Show Hidden Devices.

Of course, there can still be some devices which still do not show, such as “ghosted” drives. To view these, you can make a registry change per this Microsoft KB which will allow you to view and configure them.

This is information you may never use, but when troubleshooting hardware issues, it might come in handy.