Hi @cathrynm. If you are not an expert, performing a quick googling and just posting the first thing it comes, might not be a very good idea. Many times what Google brings is wrong, inaccurate, misleading, or only partially true. And if you are not an expert, you cannot tell, and you might just be spreading wrong, or at least inaccurate, information.
Sorry if I am being a bit too harsh, but I suggest you perform a little bit more research before claiming I am wrong and "HDMI isn't free to use".