This is a fairly expensive, but simple, printer server. With this print server you can easily share a normal printer over a network. You can then printer from this printer without having to have any other computers in the network on.
Setup is easy for the server, but it can take 20-30 minutes to follow the advanced instructions and set this up on each computer in your network.
Once it is up, you can manage the settings and connect to it using the web interface from inside your web browser. You can change settings and reboot the server and manage the print queue.
A few disadvantages are that it is quite expensive for what it does and any extra printer functionality such as a scanner is lost when using the server.
It also seems to have a few bugs causing things to not print or it will stop responding. But overall it is a fairly good product.