I think I've reviewed this product before but they keep asking. It's a cool little number pad. It doesn't matter. It's just a digital notebook my kid needs to make virtual school a little easier. It costs money. Plug and play, except for the interface where you need to find the virtual keyboard on the tablet and set the number lock. Lemon Juice Easy Peasy. I actually never would have thought of that, but their customer service is great and responsive. I love the great customer service. I would buy from them again simply because their customer service was fantastic. If you need a numeric keypad. it is great