A friend was complaining recently about how working with CAT6 cable is a little more cumbersome than CAT5E has been. Part of that reason is due to the addtion of a cross web in the middle to help keep the pairs where they should be.
And if it's quality cable, the conductors themselves will be of a thicker gauge and might be more difficult to insert into the connector. I put together a video showing two different connector styles that can be used, the EZ-RJ45 and the traditional RJ-45.
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