are two kinds of Ethernet cables you can make, Straight
Through and Crossover.
THROUGH Ethernet cables are the standard cable
used for almost all purposes, and are often called "patch
cables". It is highly recommend you duplicate the color
order as shown on the left. Note how the green pair is not
side-by-side as are all the other pairs. This configuration
allows for longer wire runs.
CROSSOVER CABLES - The purpose of a Crossover
Ethernet cable is to directly connect one computer to another
computer (or device) without going through a router, switch