know one probably knows because we don't have an old computer or word perfect. Why would you think someone has your very same scenario? Hate to sound this way but maybe upgrade. The problem is Logitech has to keep moving products forward, so it's probably not the mouse but the USB that is not compatible. You may even have those round PS connections, so long ago I can't even remember what they are called. If your an average user, pick up a new system for a price you can afford don't worry what others say and see if it works for you.