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Discussion

General Knowledge - Science
(5)

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How is power supplied to a low-power USB device?

 
Through a power cable
From an external power supply
Directly from the computer's power supply
Through the USB cable
None of these

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Please type your answer before submitting.
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Subhanchi

Seriously i was thinking we need electricity for power suppy but cable is sufficient

Jaspreet Singh

As our technology has evolved very much.

Abhijeet Suresh Pawar

And how Pen drive gets electric supply without usb cable then??