Notice:
UGEE S640 graphics tablet supports work on Mac, Windows, Chromebook, and Linux.
When connected to a computer/Laptop, please make sure it has a USB-A port for the connection.
Q&A:
1)How to Sign or Handwrite on a Microsoft Office Document on macOS?
If you want to sign or handwrite on an office document on macOS, Microsoft Office version should be Microsoft 365 or Office 2019.
2)How to Sign or Handwrite on a Microsoft Office Document on Windows?
If you want to sign or handwrite on an office document on Windows, Microsoft Office version should be Microsoft 365 or Office 2019 or Office 2016 & 2013.
3)How to make sure that the USB-A port on the computer is not set to turn off the connected device to save power?
Right-click the Start button or press the Windows Logo + X key combination on the keyboard and, from the list, click to select Device Manager.
Double-click Universal Serial Bus controllers then right-click on the USB Root Hub and select Properties, go to the Power Management tab, make sure the box is unchecked for Allow the computer to turn off this device to save power, and click OK.