Alright, so a T1 is ~1.5 mbps up and down.... not all that fast really.
So let's say that at the end of a T1 line, I have a router... an old router with a 10-based ethernet port. There are 100 computers using this internet connection, and it's slow. Technically, I would think that even with a 10-based port, you are still maxing out the T1 line because it only runs at 1.5mbps.
If I replace the router, and get a 100-based ethernet port, will it actually make the internet faster? Why would it, if you're alreay maxing out the connection by six times with a 10-based port?