Hi Colin,
Windows Security can show pop-up messages like the one that you received if the source is not recognized. But this doesn't conclude that the said program can harm your device. We just need to make sure that the driver your trying to install came from the manufacturer to make sure that the software is safe from malware.
We also need to make sure that in order for the device to perform smoothly, the driver is not only updated but fully compatible with your current version of Windows 10.
Let us know if there are other concerns.