You need a switch, not a router. (You might need a router too.) A
switch does the processing a lot faster.
How does your network operate? Do the computers connect to each other
to share files or do they just connect to the Internet.
For mostly file sharing, a managed switch would help. I would recommend
2 switches with a gigabit uplink between them. I am not sure how much a
difference layer 2 switches would make as opposed to just managed
switches.
If all the machines mostly connect to the Internet, then you need a
router capable of that many connections (but you don't need a router
with that many ports.) It would be helpful (essential?) that you have a
gigabit connection between the switch and the router.
Randy R
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