I recently decided to run some CAT6 cabling and wanted to ensure that my Crimpmaster RJ45 die would work fine for the CAT6A shielded connectors. I noticed that several people had trouble using the CAT6 connectors (eg, from Monoprice for one) for different reasons, one of which seemed to be compatibility with their crimpers (eg, bad pin contact). There are EZRJ45 connectors that need a special crimper (Platinum Tools), and that crimper seems to work for standard connectors as well... but not AMP; so EZRJ45 just seems to be a proprietary connector. I've used my Ideal Crimpmaster for years for CAT5e and never knew there to be a difference in connectors needed; Ideal says that its die is AMP.
I came across this tidbit on Wikipedia, but I can't seem to find more detail: http://en.wikipedia.org/wiki/RJ45_%28computers%29#Types_and_incompatibility Only after looking for the differences do I find that some crimp tools manufacturers make different WE/SS and TE-AMP compatible crimpers with further explanation, but in all my years I've never heard of different RJ45 standards to be concerned about. I know that solid and stranded connectors can use different pins to make wire contact, and that CAT6A and CAT7 cable diameters can be larger than CAT5, but I've seen no mention that new crimpers must be used for CAT6A/7 vs CAT5. Is it time to upgrade my tools and connectors?!