[Arrowmaster]

Absolutely agreeing with you but replying to you instead of multiple others below with my views on this.

Cat6A can do 10Gbps at 100m. Cat7 and Cat8 can do higher speeds in short runs but those technologies are DEAD in DC tech now. 40G is legacy tech using four lanes of 10G, replaced by 100G which is four lanes of 25G. Copper patch cables are not used with these, everything is fiber or DAC.

If you use a Cat7 or Cat8 cable the higher MHz support listed on the spec will never be used. When using a real cable of these qualities all you are really getting is better protection from outside interference.

When buying premade patch cables only buy Cat6A. Anything you see online saying Cat7 or Cat8 has probably never been properly tested by the manufacturer.

When buying a spool of wire do your research on the manufacturer. There's plenty with false labels out there. I once saw a spool of 'Cat6e' which is not a real standard.

When paying others to run cables find out what brand and what warranty the installer is providing. If they only use Cat7 and cannot provide a good explanation on why they might not actually know as much as you should be expecting them to.