I bought it at an estate sale with no documentation. I thought it might be a Swann Pro-746. Can anybody tell me what it might need to make it go? I made the RS485 connection pluged in the two other connections. Then I tried to interchange it with the Swann Pro-746 that came with my Swann DVR8-3000. When I plug in the power it goes through a cycle. The protocol and address screen never comes uplike on my new camera. Could it be locked up. I see it has some small switches on the inside, any thing I can try there? Is the camera done for? Any help is appreciated.