This package contains the PCB Footprint and 3D Model Package for Proteus.
Download the package.
Copy the LIBRARY & MCAD Folder to the installation directory of Proteus.
For Example:
C:\Program Files (x86)\Labcenter Electronics\Proteus....
or
C:\Program Files\Labcenter Electronics\Proteus....
If the 3D Model is not showing up, simply place the PCB Footprint on PCB Layout and Right Click on it and select 3D Model. Then select the MCAD file and change the orientation if needed.