Crossover cable emulates a switch/router. Basically, it reverses a couple of wires. Plug one end into each computer & you have a network :)
I used to make them all the time - Not hard, if you have the right tools & a good set of eyes. Much cheaper than buying one.
Crossover cables are also used to link 2 game consoles (PS3, XBox, Wii, etc.).
Off to check out Karl's video ;)
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1987 32 Sedan Bridge
Twin 360s, Rebuilt 2006
Modified/Original Electronic Ignition
Raw Water Cooled
Catawba Island, Ohio