Im currently learning the fundamentals of networking and I fear I may have had the wrong idea about what a hub really is but I want full confirmation because I am that confused on how I could have been wrong. So a hub is a device that is used to connect computers together.. but doesnt a hub have a communications link to the internet also? or is it just for connecting computers on the same LAN? if the answer to this is yes and there is no link to the internet.. then what is BT Home Hub for then? as I always thought it was used in the same-way a router is used but never truly understood it.