Is AutoCAD Architecture different from AutoCAD?

If you need to do technical drawings, you can use AutoCAD to create those drawings. AutoCAD Architecture has all of the features that AutoCAD has, but it has additional features that are specific to the discipline of architecture. So, it has tools that are unique to the building design industry.

Why do we need to Install Driver for USB to HDMI Adapter?

Basically USB Port is not designed for Video Output/streaming. To make it work as Video output/Streaming port we need to install Driver.