Fits all standard CAT6A/CAT7 cables Telegärtner RJ45 connectors use a patented combination of geometry and circuitry to minimize the inevitable impedance mismatch that occurs as when a cable’s 4 twisted pairs are laid out in a straight row. The scale of this performance difference is slap-in-the-ears obvious and indicative of the difference all connectors make, and installers who compare these connectors will have the opportunity to hear for themselves just how big a deal a connector can be.