Which data cable is powered?

- Jan 04, 2018 -

Which data cable is powered?

Red is positive Black is negative White and green is the transmission of data; external power supply positive and negative colors are generally red positive, black negative.

There are two cases of external power supply:

There is no power inside, you must have another power supply to work, that another device is called external power supply.

Electrical appliances have power, but there are some reasons can not be used, you must add a power supply to work outside the case, the external device is an external power supply.



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