I have a 4-port Linksys router for my LAN. Now, I want to expand my LAN by buying a 5-port Linksys switch. In order to get them work, I plug 1 straight-trough cable from one of numbered-ports (1-4) on the router and plug it in to the uplink port of the switch. I did that, but it doesn't work. Anybody could help me, please???