Why does my DTU only work as a mouse over RDP?
The standard Remote Desktop tool which comes with Windows is not able to handle pen data.
If you want to use a DTU or other Wacom pen input device successfully over RDP a third-party USB redirection app is required.
We collaborated with a company called Incentives Pro to ensure that our DTU pen displays worked well with their Terminal Services USB-Redirection software. This was in a Windows-based environment at both ends, i.e. client and server.
If you have a different requirement such as a Linux-based client then please contact Incentives Pro directly to see if they can support you.