New registration for Replay 5504

Is there any way to activate a brand new Replay 5504? It is fresh out of the box (which made reference to the 3-year free subscription). I have another, identical unit that is still in operation, so I am hoping to network the two devices. I do not really care if the new one gets programming. I just want to use it to play shows that I record with my existing unit.

Thanks, and sorry if this is a repeat question. I have been looking for the answer on the forum without success.

Yes, I plugged it (power and ethernet) but it keeps telling me it cannot connect. I will get the exact language later today in case that gives a clue. The first time I tried, it automatically populated the IP settings. For the subsequent attempts, I had to fill them in manually.

I am using the same ethernet cable from my old Replay, which updated just fine when I moved the cable back to it. I thought maybe Replay would not activate a new subscription now (?). Or, perhaps it is good-old-fashioned user error.

Thanks for the suggestions. Before resetting, I unplugged the new Replay and plugged it back in, and it then connected on its first try. Now, I just need to get the two units networked . . .