I think this is a pretty simple question, but I wanted to either validate my thinking, or for someone to tell me I'm wrong.
My router at home has 4 gigabit ports. So, obviously, each (supported) device connected to it is over a gigabit connection.
If I add a gigabit switch to one of these ports, and I add two devices to the switch, will they still have gigabit throughput to the rest of the LAN, or will it be reduced because there are two devices fighting for contention over the gigabit connection from the switch to the router?