I've used their products in a variety of automation projects for clients and at home, and have only good things to say.
I happened to have earlier purchased an industrial quality hub that's powered by 12-24V DC, and it turned out to have per-port power control.
Power factor is another concern BTW; I was measuring something like 0.15 power factor when the drive was powered down, and I'm unclear how such a low PF affects inverter efficiency (it probably depends on how good the inverter is). Powering the drives from 12V DC would probably improve their offgrid efficiency.
Found on my phone in 30 seconds. In units of 100k you could easily find something for 2 cents or less.
I'm in the middle of building an enclosure for a cluster of Raspberry PI like boards (~2.4A draw) and want to have software power controls. So I've been looking to do this...
There are specialized devices for this sort of thing from many manufacturers. I'm currently looking at devices from TI - TPS22958. It has a built in charge pump and an R_DS on of 0.014 ohms. So dissipation will be a lot less 0.081W at 12W power delivery, a 0.7% power loss. This of course comes at a cost -- even in the 10,000 of units it will cost ~40 cents a unit.
USB hubs with per port power control are the flying unicorn of hardware. Once in a while some vendor slips up and makes one, but by the time people figure it out the vendor has ended the model or replaced it with a different model under the same model number. It’s especially frustrating because many of the USB hub chipsets support the feature, but only if the manufacturer puts a switching transistor on each port. It literally would only cost pennies per port to have the feature.