The price difference between a Switch and a Hub is almost vanishly small these days. Unless budget really is a key issue we would suggest a Switch. They come in all kinds of sizes 4, 5, 8, 16 and 24 ports. some have the ports at the back and leds at the front, others put both at the front.
RJ45 and LEDS at front
RJ45 at Rear LEDS at front
The general specification - irrespective of whether its a switch or hub - is:
- Minimum number of ports equal to the most systems you can think of connecting plus some (say 2) ('cos you are going to change your mind!)
- 10/100 Mbit/s auto sensing
- LINK LED for each port
- 10/100 LED for each port
They typically come with lots of other features e.g. Full/Half Duplex, managed or unmanaged - your budget will figure out what else you want or can afford.