It's the first time I didn't build my studio PC myself.
The deal at Scan UK was just too good and the scope for me spec'ing it wrong was too risky this time around.
Mine is much like the Mobo and Thunderbolt 4 card in this article.
https://www.anandtech.com/show/16550/asus-reveals-thunderboltex-4-expansion-card-dual-typec
I've got a Startech T'Bolt 3 to T'Bolt 2 adapter, one of the Presonus recommended ones.
There was another mobo option with T'Bolt 3 out from the panel (Gigabye IIRC) but it had way less USB sockets than this ASUS Z-590 Prime, so I went for this slightly older Mobo and the ASUS EX4 card to provide T'Bolt 3 outs.
Good luck with your build