Cisco Switch (Westcliff-on-Sea (SS0))

Cisco Catalyst 2950 series. Rack mounting size 445mm x 238mm x 44mm 240v AC
12(no) RJ45 ports 10Base-T / 100 base-TX all on front panel.
It is set up so that you can provide an etehrnet feed from your router, using a crossover cable (1 have one available if needed) and then link up to 11 devices using standard UTP drop cables.
Or if you want to delve into the Cisco world, it can be programmed to do more.
The only drawback is that the fan produces a background 'hum' which is not excessively 'noisy' but enough to be a noticeable distraction in a quiet office. If mounted in an equipment cabinet it wouldn't be a problem.