My question is ... on the back of a Wireless Router for home (such as Netgear N600 WNDR3400), there is 1 unique jack to plug in an Ethernet cable, then there are 4 "Port" jacks numbered 1-4. How do you know when to plug into that 1 jack vs. one of the other 4 jacks? Is there a general rule? And when you connect a Router directly to a PC to modify it's settings, which jack do you use?
(The situation: My house has a lot of gear in it ... Internet from the ISP coming in, going into a large (20-port) Switch, which goes to outlets in the house. And at a couple of those outlets, there are small 4-Port switches that then go to printer, AV Receiver, PC, etc. And some of those go to Wireless Routers as mentioned above. and one has both ... Small 4-port switch in the room, going to a Router.)