Is the silver portion of the hub actual metal or is it silver colored plastic? Noriko July 11, 2018 08:08 Updated Follow A. The top silver portion of the hub is aluminum while the bottom white portion is plastic. Related articles Does it come with a USB cable? Does this give you true gigabit on a gigabit network? Is this compatible with Apple Superdrive? Comments 0 comments Please sign in to leave a comment.