Some commercial crossover cables are yellow, instead of the usual black ethernet cabling.

On Thursday, February 2, 2006, at 05:02  PM, Daniel wrote:

On Feb 2, 2006, at 16:48, Dwight Hines wrote:
Duh, I have several cables.  I believe one is a cross over cable.

How do you know the difference?

Dwight,

You need to look at the wires in the pins in the plugs. Hold the plugs side-by-side so that the copper connectors are facing you, and are at the top of the plug, and that the cables fall toward the > ground.

If the wires in the pins are in the same order, it is a straight cable. If two pair are reversed, it is a crossover. The wires need not be in any specific order - it's just whether the ends match, or whether 4 pins are reversed.

When I personally built cables, I built them like this:
        1- white-orange
        2- orange
        3- white-green
        4- blue
        5- white-blue
        6- green
        7- white-brown
        8- brown
For a straight cable, both ends would look like that. For a crossover cable, one end would look like that, and the other would be ordered like this:
        1- white-orange
        2- orange
        3- white-blue
        4- green
        5- white-green
        6- blue
        7- white-brown
        8- brown

Daniel


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