The is a legacy device, and official driver support from Wacom for modern operating systems has ended. However, you can still get it working using specific legacy or community drivers. Official Legacy Drivers

Unplug the USB cable from your computer.

Before downloading, confirm if you are on a modern or older system. The CTE-660 performs best with specific legacy versions: Windows 10 & 11: Usually requires the legacy Driver 5.3.5-3 macOS (High Sierra 10.13 or older): Typically uses Driver 5.3.7-6 Modern macOS (Catalina 10.15 to Sequoia 15):

: Connect your CTE-660 only after the driver installation is complete and the system has been restarted again. Fixes for Modern macOS (Catalina and Newer)

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