I would like to connect my Android tablet using a USB cable instead of WiFi but have no USB connection options in the driver window and no Driver Console item in Windows Start menu. It has only these options: ON/OFF, Windows Display Control Panel, Clear All Display Settings, and Hide Taskbar Icon. Is it possible at all to connect using USB from a Windows 8.1 PC?
Windows 8.1 has its own version of Driver Console; however, it offers the same options as the Tray App (ON/OFF, Windows Display Control Panel, Clear All Display Settings, and Hide Taskbar Icon). The difference is that it contains a lot more information, such as the IP address and active client connections. You can access it by searching for ‘spacedesk Server’ in the search bar.
As for the Native USB connection, Unfortunately, it is not supported yet on Windows 8.1
However, you can try connecting via USB Tethering. Please check the Connecting a New Display Monitor Over the USB Cable -> USB Tethering (iOS and Android) chapter in the user manual – https://manual.spacedesk.net/USBTetheringiOSandAndroid.html