I would like to know if some configuration exists so that these two cards work simultaneously. Since only HWIC works me. And when I remove HWIC it works me the NM-16ESW.
I ignore if you can configure a stack among both cards, or other solution.
Intra-chassis stacking is not possible with these two modules. You can run an ether-port from each module and cofigure it as a dot1q trunk in order to have ports in the same domain and configure them accordingly.