Question Where can I get a Thunderbolt 4?

[amerifax]

>Where can I get a Thunderbolt 4?<<

I have tried Amazon and Google and no luck. Is it called Thunderbolt 4 or something else? It's the that is a problem. It wants to bring up 4tb.
Bob

 

[USAFRet]

A thunderbolt 4...what?

External drive? Cable? Something else?