Recommended hardware for 100mbps connection

[dnzanella]

As tittle says, 2 ethernet ports minimum, 10/100, low power (as low as possible), stable
Prrobably 3-5 users maximum, might run Ovpn squid, squidguard

EDIT : Mistype

[fredfred5]

An SG-2220 would be perfect for that.

If you are going to run squid I would advise getting the additional storage.