This is the product rendering of a router used on yachts. It is weather sealed and has connectors for power, Ethernet, 4 antennas, SIM-card and pressure release valve.
The rendering was made for high-resolution print (200 x 80 cm at 300 DPI) so material details had to be accurate.
I created 3D models for all the parts and assembled them, including internal. But it wasn’t required later since we needed only exterior rendering.