After 3 months of use, I decided the numeric keypad to send to nirvana of other useless gadgets. I work a lot with numbers, so a number block for me is extremely important. The installation gave me then also on the first day problems that I could solve until the next day. Only then the numeric keypad has been recognized - the attached instructions, incidentally, was not much help. For use 2 AA batteries are required, but the number pad comes after a certain period of inactivity in hibernation. In itself, that would be a good idea, but when you want to work again, you must press one of the buttons - and can then once go confidently pick tea or empty the mailbox. Sometimes I waited up to 2 minutes before the keypad was ready. Over time, the application was always frustrating, since I spend too much time that the numeric keypad is detected. That the number pad when using Windows under Parallel Desktop is useless, although annoying, but not necessarily the manufacturer's fault. As much as I want to keep LMP still benefit.