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Comment by loopbit | Hacker News Reader

Not only for macs... I have 4 raspberry pi4 powered through an USB hub and spent quite a bit of time looking for one that had at least 4 ports and that every port could deliver a minimum of 5V-3A. The US amazon had a few, but trying to find them (or similar) in several european Amazons was quite difficult.

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> and that every port could deliver a minimum of 5V-3A.

For the pi, “at the same time” is what most hubs seem to miss - often they can supply 3A per port, but not ports * 3A overall. (60W on 6-10 ports is a typical config, so you can pull 12-15W per port, but not 6 * 12+ overall.

Good HDMI capable usb-c hubs below 20 USD? Hmm, I cannot find anything similar priced in NL. I would prefer to have one that can do 2x HDMI as not all workplaces I sit have usb-c capable monitors. When I was checking a while back it seems to have a weird pricing gap between ones that have 1 or 2 HDMI outputs. More than twice the price.

Any chance of a link? I'm looking good something to power a Pi4 cluster. Thanks

I ended up going with this one: https://thepihut.com/products/anidees-6-port-smart-ic-usb-ch...

Have had it for a couple of months now with no issues.

Thanks

AFAIK that 3A figure for the Pi includes power for the USB ports on the Pi. So if you don't load up the USB ports, you can get away with more like 1.5-2A, depending on what you do.

Thanks. I intend to use it as a cluster ski no need for USB peripherals, I'll keep that in mind!

FWIW my 4GB RPi 4 pulls about 1.2A peak when using the CPU full tilt. Haven't stressed the GPU yet so don't know about that. This without any USB except wireless Logitech keyboard/mouse receiver, and with Wifi enabled.

Useful information thanks. That's much lower than the recommended 3A.

You have some model numbers handy? Which one are you currently using?

For amazon.com, there were a few from Anker (one was mentioned in another comment) that looked interesting... As I said, no luck finding them in europe.

I ended up going with this one: https://thepihut.com/products/anidees-6-port-smart-ic-usb-ch...

One of Anker's raisons d'être is high current USB ports, so I'd be shocked if they couldn't do 3A.

I did not realize they were not available in the EU though. It looks like they list on Amazon UK, not sure how helpful that is.

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