Quote from: n0nce on April 01, 2022, 01:57:51 PM

Quote from: nullama on April 01, 2022, 01:57:39 AM

And also, looking into it, it seems that it is indeed possible to send data and PD higher than 3A at the same time, as this device states:

Quote from: https://www.coolgear.com/product/usb-power-delivery-4-port-type-c-240w-super-speed-hub#1

It’s bi-directional with power transfer while transmitting data.

This seems to be in line with what the standard says:

https://i.imgur.com/rnXPtNa.png

So, at a minimum, USB4 hubs should be able to provide 3A with data per port by using USB Type-C Current, and possibly more if the device is able to do data and USB PD at the same time, as this linked device seems to be able to.

It makes sense, because when people connect their MacBook to a USB-C display, it quick-charges the MacBook through the same USB port through which the high-bandwidth video signal is transmitted. I believe they achieve the high wattages by also increasing the voltage, but nevertheless I'm sure that they charge at more than 3A.

Even than if it worked, I would find these kind of miners with usb-c highly dangerous. People, who doesn't know much about electricity or doesn't make some research in this topic can easily burn their homes down only by plugging a usb-c miner in a hub and letting it behind running without any super active cooling. Shocked

They would/could think, it's a small n cute, noiseless device - which it is -, compared to a 1000W+ asic miner, so what wrong could possibly happen?! Well... The thing is, in my opinion, that people are broadly used to using fastchargable and other devices, what support 20-60-120W input capacity. They, in most cases, only see the number and think the bigger, the better and don't even know, what it in fact means. It's a hell of a load. Maybe I'm wrong and way too precautious but even 12-15W is enough dangerous, if you don't know how to handle it.
With usb-a miners, though, there can be theoretically no problem regarding heat. I mean, you can cool them down with a fan or two and don't need any uber extra knowledge. However, if you want to use usb-a miners on high frequency (aka high amperage) and max them out, you must do some research beforehand, in order to accumulate a level of understanding what's going on in the background. Otherwise, you're stuck with the idle, "safe" frequency, or with older usb miners, which are safe to use and almost PnP devices compared to a compac F.

If someone want to mine for a living won't buy any low hashrate, unefficient usb miner and additionally geather the pieces they need to get them work, but a robust 1000W+ asic. For hobby miners and DIY fans should a usb-a compac F or something similar be enough to play around with.

It's rather about fun, possibility of solving a block in this case, than being profit driven. I'm not saying usb-c would be a dead end or would be bad, I only find it risky and a bit too dangerous. That's why I reckon usb-a miners are enough. Who knows what kind of super-chips the future and the developer misterminds bring us. Roll Eyes