Fully working. I used these to connect two segments of my home network via coaxial cable in the walls.
Includes two units with power supplies, sealed original paperwork for one unit, and one coax isolator (to keep your network signals from travelling out of your LAN, if using coax in the walls that still has a connection that leaves the house).
These devices will be factory-reset before shipping, and you will need to set them up (connecting to them through a web browser to set various parameters) to work on your specific network. I will NOT be providing advice or tech support of any kind for these units.