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Cat 6 Connector Compatibility
Last Updated: 2/8/04

Q. Can a Cat 6 modular plug be plugged into Cat 5 and 5e RJ-45 Jacks?

A. Yes. The physical dimensions of Cat 6 RJ-45 plugs and jacks are identical to Cat 5 and 5e plugs and jacks. They are backward compatible with Cat 3, Cat 5, and Cat 5e plugs and jacks.

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