Well the fun fact is:
I used to run 6 Noctua Industrial (3 120 & 3 140) (3x2 with splitter) on a simple extension fan card (from Asus), I'm not even counting the other fans connected to the motherboard, and I've never had any issue with that card, at all. (used this setup for more than 2 years on my previous setup without any issue) And I'm still using it with my current configuration, since I have to return another Commander Pro.
The Commander Pro is supposed to be a premium product compared to that extension card, you can expect to be capable to run 6 fans without toasting a port.
My VRM fan draw 0.18A for information.
And yeah, 2400 rpm used to exhaust the huge amount of heat produced by a i9 7900x OC at 4.6Ghz during a workload. (I'm considering to delid it but... warranty you know..)
But yeah, on my next Commander I'm just gonna plug 1 NF-A14 on the Commander, because I need it to be tie with a probe, the other ones will be on the extension card.