With help of the DYMO LabelWriter Print Server, you'll increase user-friendliness, and you'll expand your LabelWriter's functionality. The Print Server ensures that every connected to the computer network can use the connected connected 400 or 450-series label writer. Installing is very simple: connect the server via USB to your LabelWriter and via an Ethernet cable to your network. Now you've got the green light for everyone to print as desired. The DYMO LabelWriter Print Server is compatible with both Windows as well as Mac computers.