Why is in ROS 7.19.1 switch-marwell package if CCR2004-1G-12S+2XS dont have switch chip ?
The list of packages now shows all packages available for device’s architecture. Your router is ARM and there are plethora of different ARM devices.
For example: there’s wifi-qcom package available, your router does not have required hardware (AX-generation of wifi cards) … but it’s listed. And you didn’t install it.
BTW, you don’t have to install all the packages available … most probably your router would do just fine (if not better than now) without quite a few packages installed … most packages are “optional” with a reason.