Bests & Worsts Reviews from Amazon

I bought this because it says it's Universal. I've just gotten my first Keurig- a K-Mini- and want to use fresh ground coffee in it. When the package got here, I read the directions, took the filter out and removed the adapter as instructed then tried to put it into the machine- and it did NOT fit. It was way too big. After several minutes of playing with the thing I figured out what the instructions DON'T say. You have to reach under the machine head to where the coffee comes out and push up on the nozzle where the coffee comes out- the entire black piece you put the pod into pops out. Then the filter will fit down into the machine.