A router is a device that takes a single ethernet connection and multiplies it. A single ethernet cable is plugged into the uplink port of the router. Then additional cables can be plugged into the remaining ports (connections) on the router box.

Ethernet connections run at 10 and 100 mbps. These are the two speeds I have. There may be even faster speeds but I don’t need them so I am not interested in them if they exist. I am interested in being able to support both 10 and 100 mbps ethernet network cards. Because I have cards sporting both speeds. Because I am cheap, yes, but also because I don’t need anything really, really, fast. The slower 10mbps does just fine for all I need to do. Besides, I have a good supply of the 10mbps network cards and have no plans to upgrade anytime soon as long as they keep working.

I just discovered that ethernet routers may not support both speeds. I have a so-called high speed switch/router that can only handle 100mbps data. I found out the hard way by watching it refuse to connect to a 10mbps network card.

Depending on your needs, you may want to make sure that the router you use (if you use one) is capable of both speeds. You can tell right off if it is because it will display a 10/100 on the box somewhere.

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