I bought this keyboard combo because I spilled water on my keyboard and because I could not find the Ex100 keyboard by itself. I LOVE this keyboard. The new keyboard is actually nicer than the old one! The first one lasted me about 4 years (some letters began to wear off of the keys!) until I spilled water on it then I had to buy another because I loved it so much! I just didnt use the mouse that came with it at all, I prefer the Logitech M310.