On an SBS 2003 R2 network with 9 desktops, it's connected with a several year old dell unmanaged 16 port 100baseT switch.
I am betting that it can't hurt to replace that switch with one that has at least 1 Gigabit port (the server would go on that).
The server has a gigabit nic and if I use task manager, I can see networking top out at 10% once in a while. But then it scrolls off the screen.
How would you go about seeing that it's maxed out x% of the time or some other justification that a gigabit switch would help the throughput for all the machines?