What is Cat7? It's effectively a dead standard and one that few should concern themselves with.
You probably don't need Cat7. Use Cat6A or Cat8 instead
Cat7 cables are not a common standard, nor one you need concern yourself with. If you need the kind of performance Cat7 offers, Cat6A is perfectly up to the task. It's a widely supported cable standard and has all of the benefits of Cat7 without the drawbacks. If you are running a data center or really interested in future-proofing your network, then you’d be better off choosing a
Cat8 cable. Cat8 has the blessing of the industry and is approved by the IEEE and EIA and even comes with the familiar
RJ45 connectors. Though length limitations do apply, Cat8 is rated for 25 & 40G speeds and provides an excellent alternative to more expensive fiber connections.