I am building my personal private cloud. I am considering using second hand dell optiplexes as worker nodes, but they only have 1 NIC and I'd need a contraption like this for my redundant network.
Then this wish came to my mind. Theoretically, such a one box solution could be faster than gigabit too.
If those are gigabit, I think I have that exact adapter. I have never used it in production, but I have not run into any issues using it with a laptop when diagnosing. Theoretically you can connect hosts directly to each other via usb3 ala level one and have really fast through put but I have not even started investigating this.
Here is an alternative Piped link(s):
level one
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Adding to this - I have those adapters to, ans fyi they don't support jumbo frames.
The level1 video shows thunderbolt networking though. It is an interesting concept, but it requires nodes with at-least 2 thunderbolt ports in order to have more than 2 nodes.
You are right, I typed the wrong thing.