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

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 https://www.fs.com/eu-en/products/82464.html Claims "Near-Zero Power", but I have zero experience with >100g