I think with a Hub you need the main computer with the DSL/Cable connection on for the other computers to access the internet. With a router the connection is held and whatever computer you turn on that is connected to the router will have the internet access. Thus you don't have to leave a computer on all the time. Also you get a firewall and a print server with the SMC. I now share my laser printer with the 4 computers in the house. No more unplugging or transferring files to print my jobs.
YAZ
YAZ