Hi redfoxbluefox,
Watcher software does not comes with USB driver.
Please try driver for MC series below:
https://source.sierrawireless.com/resources/airprime/software/airprime-mc-series-windows-drivers-qmi-build-4277/
By the way, on Windows 10, maybe you don’t need Watcher but the Windows 10 built in connectivity.
Otherwise, please try the latest version available below:
https://source.sierrawireless.com/resources/airprime/development_kits/airprime-mc-series-connection-manager-qmi-build-4202/
Hope it helps.
Thx
L