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Guide di riparazione e supporto per i laptop Lenovo.

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USB ports might be underpowered?

I have a Plantroonics RIG Surround headphones and knob, but for some reason only on my laptop (Lenovo G50-80) I can’t get both speakers working in the headphones (only left side and microphone work) when plugged with the USB cable that is meant for PC, but it work perfectly on my sister’s laptop (I think it’s an old HP 15T, has an i3 5005U), are my USB ports underpowered? And how can I fix it?

Both laptops are running in custom full performance profiles

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@i_am_mike_ “are my USB ports underpowered?  “ No. If they were then your headphones would not work at all. Since you only have one side that does not work, check the cable you are using and check another USB port. This appears to be a signal isue not a power issue. Try and check your USB port with some other devices as well.

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Other devices don’t experience any issue and I’ve checked all ports, this is a really weird situation

But can’t it be underpowering just barely lower than 5V?

da

You could get a powered USB hub (one which has its own AC adapter), and plug it into one of the questionable USB ports. If your problematic device works fine while plugged into the powered USB hub, but does not work when plugged directly into the questionable port, then it has to be a power issue.

da

@i_am_mike_ not if it is a functioning USB port. If it would be underpowerd it would not turn one side off. It would most likely either not work at all or just be very dim sound. You need to check the amperage if anything. Should be anywhere between 00-750 mA. I

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Mike Pomerants sarà eternamente grato.
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