Fully operational and functional machine. Runs off a 110V plug in. Removed from an Office Remodel and then the location upgraded machines. I've inspected the machine and found it works properly with many recipes already programmed. 1 key provided. Only 1 item that will be needed. Photos show the internals, The green ring by itself is a locking ring for the left side mixing chamber (where the milk/frothy product and soluble coffee hopper meet), The right side is missing. This locks it in place, so it does not leak when mixing the product. Ring is roughly $13.99 plus shipping from the manufacturer. Unit is OBO so make an offer. Unit is heavy so lift/loading assistance is offered when unit is purchased.