All you need is a switch (not a hub, those are obsolete).
5 port:
TRENDnet TE100-S5 10/100Mbps Fast Ethernet Switch - Newegg.com
8 port:
Rosewill RC-406X 10/100Mbps Switch - Newegg.com
Connect it to your router with a cable, then you can connect wired devices to it.