Something that is weird and doesn’t make sense is the idea of crossover cables. Ok, they do make sense but I’m not going to get into that here. Crossover cables are just like regular network cables except, and here is the surprisingly bit, the wires inside them are crossed over.
When to use them
Crossover cables are used when you are linking two computers directly. When using hubs, switches, routers, etc you want regular network cables but if you are linking two computers from one network port to the other you need a crossover cable.
Of course one problem is if you have just wired everything up and taken up half the carpets in your house. Putting a new cable in doesn’t sound like something you will be wanting to do any time soon.
There are two ways to work round this (you could also buy a network hub but that’s expensive and pointless so I won’t be covering that solution). The first is to get a connector and stick two crossover cables together, so the wires crossover twice and therefore cancel each other out.
The second solution is to get a connector that does this for you. You plug one end of the connector into your computer and the other end has a port to slot your regular network cable into. It’s just like a little box that does the crossover for you.