BoingBoing Gadgets found this photo of the original original Ethernet cable at Xerox PARC, devised by Bob Metcalfe so he could rig up a local system for sharing things digitally. The diagram below ...

For some, differentiating straight-through, crossover, and rollover wiring of cables could be quite challenging. These terms are referring to the way the cables are wired (which pin on one end is ...