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Power usage is also very reasonable! 400GE switches and routers pull a ridiculous amount of power.

I believe the 30W figure was power usage before SFPs or DACs. Looks like 400G sfps are about 10W, so you'd double it when fully loaded. I believe passive twinax doesn't use anywhere near that though.

https://www.fs.com/eu-en/products/82464.html

Claims "Near-Zero Power", but I have zero experience with >100g

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