The KitchenAid Automatic Milk Frother Attachment goes perfectly well with the KitchenAid Semi-Automatic espresso machine.  It is very simple to set up. I am able to fill it up with my milk of choice, and disconnect it to return to the refrigerator.  The frothing takes a small amount of time to get used to.  Hot steam comes into the milk and makes it hot and bubbly.  It does take a little bit of finesse to keep the milk where you want it.  Overall a great and easy to use attachment for your machine.