No, you don't need a router if you're only using cable.
No, you don't need a router if you're only using cable.
I'm not sure, but using a cable connection might make your connection more stable. More RAM and a better processor in the router could also help, though the difference might be small. It depends on how noticeable the improvement is. If you're unsure, testing both setups would give you a clearer idea.
With a contemporary router, connecting an Ethernet cable should not cause any issues.
The main drawbacks of using a cable company's combo unit are limited settings compared to what some prefer, such as guest network options or streaming bandwidth priority. The one wireless access point might provide enough coverage for your home, but it could also leave dead or slow spots. If you're not experiencing issues or require those extra features, you should be okay.