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Thread Starter 
So i have my hands on a Cisco 2921 ISR Router. I will be learning how to program it and it's features for my home lab.

I had a question about the EHWIC Expansion cards.

I currently have a 4 port. But i need to add a few more ports to it.

So my question is, in terms of efficiency/speed, Would it be better to:

a) buy multiple 4 port Switch cards so that every 4 ports has it's own plug and connection to the router internally.

b) buy the double wide 8 port, which would have 8 ports connected to a single EHWIC connector.

I hope the question makes sense. I'm just trying to figure out which would be more efficient in terms of ports vs connections to the router and how it would handle the traffic.