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So I bought an Amazon Basics powered usb hub in order to power 2 webcams and 2 mics. I don't have the mics connected, only 2 webcams.

So I plugged in the powered hub to my wall, and then the two webcams to my hub. Only one of them works, unless I lower my resolution to a whopping 144p.

I decided to unplug the hub from the wall socket, and the hub works in the same way. This leads me to believe that the wall power isn't even going through the hub.

Any ideas? Is there any specific product that you know works with multiple webcams?

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  • Did you plug the hub into the computer? Non An USB expert but USB only provides 100mA or 150mA (first for USB 1 & USB2, the 150 for USB3). Unless negotiated that it might draw more. Not sure if a hub can negotiate of just passes that info on to the computer.
    – Hennes
    May 9, 2019 at 19:05
  • @Hennes yes it is plugged into the computer. Is there anyway to increase the amount of power outputted? The hub claims to provide 5V/4A of power. Would a 12V/3A one work better? May 9, 2019 at 19:13
  • It should work precisly the same. USB was desgined to privide minimal power (100mAmp at 5v) for to power mimimal electronics. E.g. an pendrive, or the controller in a keyboard. If a device needs more power it should only draw 100MAmp (aka 1 bin) and then ask the computers if it pretty please may have more. Assuming the computer had spare power left it would might than grant that, or reply denying it. In an unpowered USB (fed from one USB cable) that would easily mean running out of power. In a powered USB hub that should not happen,
    – Hennes
    May 9, 2019 at 19:26
  • But....that assumes everything follows standards (everything, not just the hub). The last is often hit and miss on USB.
    – Hennes
    May 9, 2019 at 19:26
  • @Hennes So are you saying its possible that one of my devices (webcams, hubs, or PC itself) might not be working as intended? I think its weird that a hub that has 7 ports can only supply to one at a time... May 9, 2019 at 19:30

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