M4 Imac with 4 ports, how many Thunderbolt busses

[joeriggs]

Can someone with a M4 Imac with 4 ports confirm how many thunderbolt busses it has?

You can confirm the number of Thunderbolt buses in your Mac by viewing the System Report window
(select About This Mac in the Apple menu and then click the System Report… button).
Then click on Thunderbolt in the column on the left.

Thanks

 

[joevt]

I believe all Apple Silicon Macs have a single Thunderbolt bus/controller per Thunderbolt port. It's been that way since M1.

Someone with an M4 iMac needs to confirm to be sure.

 

[wilberforce]

Yes.