The USB spec limits the amount of power a single device can draw from its host. For a USB hub, this means that the downstream devices will have to split a singl

The USB spec limits the amount of power a single device can draw from its host. For a USB hub, this means that the downstream devices will have to split a single device's worth of power allowance between them. So to support multiple power hungry devices, many existing USB hubs offer additional external power supplies. In my case, I have two midi controllers and an external audio interface that all want their full share of power. The audio interface refuses to run without it. So I'm wondering if there's a hub that is "externally powered" via the host's PD power supply. There are plenty of USB C hubs that can draw additional power from a downstream PD source. But I want something that can draw additional power from the host even if it's a laptop running on battery. (Power Delivery is an additional spec that can run over USB C, but its existence is independent of and doesn't change the USB spec's power limitations for a single device)