does this come with mounting hardware?

Yes, but be weary. I had to replace mine because while I ordered the D-RGB and the box was D-RGB, I realized after the whole build was complete that the LED in mine was not D-RGB and was 12v RGB instead of the 5v with multi-colors like D-RGB is supposed to be. I got the new one and it has the correct connector for multi-RGB (3 prong).