I don't understand your question. You want to know if you can use your ethernet port for ethernet?

There are a number of questions that might be asking. If you mean ``can I simply unplug my cable modem and plug in my empeg (using an appropriate cable) and expect it to work'', then Loren's answer of yes is correct, given one or two assumptions.

But if you mean something else, then probably not. If that's not what you meant, let us know.