Logic board with 20 USB3 ports

Re:Logic board with 20 USB3 ports by Gelob on Monday September 21, 2020 @01:46AM (#24540207)

Now make one with 20usb-c

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Re:Logic board with 20 USB3 ports by cbhl on Monday September 21, 2020 @02:05AM (#24540311)

That would be a lot of power if you supported PD on more than two of them

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Re:Logic board with 20 USB3 ports by arcticbull on Monday September 21, 2020 @02:32AM (#24540462)

Well, that would depend on how much power you're willing to pump through on PD. PD doesn't in and of itself mean the downstream facing port support the full 100W (20V/5A). You could conceivably add a PD billboard and pump out the minimum supported wattage, which I believe is 150mA @ 5V, so 0.75W?

[edit] Looks like PD2.0/3.0 supports 100mA @ 5V minimum. [1]

Now what you could do that would be really neat is have a set power budget for all your ports, say 250W, and allocate that power on a first-come first-served basis. Provide a minimum of 5W per port, and then the rest is allocated in accordance with the power delivery negotiation protocol.

Say you plug in a laptop, it requests 85W, and you give it 85W. This leaves a power budget of roughly (250W - (minimum)(20*5 = 100W) - 85W = 65W).

[1] https://en.wikipedia.org/wiki/USB_hardware#USB_Power_Deliver...

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Re:Logic board with 20 USB3 ports by Hackbraten on Monday September 21, 2020 @03:49AM (#24540851)

And have each port support a different set of capabilities.

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