I think mine weighes about 5 to 8 pounds.
EDIT: I just checked the website and it says that it supports windows but doesn't really put the weight on the site. I was hoping that I could get a wired Apple keyboard but the website doesn't say that it supports anything else but Mac so......
The Apple keyboard definitely supports windows, and the bootcamp drivers might even make the extra buttons work (but I'm not sure.). The only issue is that the windows(apple) key and the alt key are switched in position.
David
So is there any special software I need for the keyboard to work or is it just a plug and go type thing? Also is it USB?