Welcome to the Dell Community  @hktexas 

Try this one first.

Intel® Serial IO Driver for Windows® 10 64-bit for Intel® NUC:

https://downloadcenter.intel.com/download/27717/Intel-Serial-IO-Driver-for-Windows-10-64-bit-for-Intel-NUC

If not then run this.

Intel® Driver & Support Assistant (Intel® DSA)

https://www.intel.com/content/www/us/en/support/detect.html?iid=dc_IDSA

Best regards,

U2

@hktexas 

This is the only other one I can find.

https://downloadcenter.intel.com/downloads/eula/28103/Intel-Serial-IO-Driver-for-Intel-NUC?httpDown=https%3A%2F%2Fdownloadmirror.intel.com%2F28103%2Feng%2FSIO_WIN10_64_30.100.1727.1.zip

If that does not work right click on the device and try to update the driver through Windows.

Regards,

U2

still not working :(, window 10 pro with unknown device driver ids ACPI/VEN_INT&DEV_34BB, thx

Your very welcome @hktexas 

Best regards,

U2

this one is working, thank you so much U2CAMEB4ME