This keypad was purchased several years ago and was never opened. It was manufactured during the Windows Vista era. I\'m not sure what operating system it works with. If you\'re serious about buying it, I can open it and check it with my computers (Windows 10 & Windows 11) to see if it\'s detectable. I\'ve had one of these previously and it was a lifesaver when I had to do payroll on my laptop that didn\'t have the numbers keypad.