usb3 ext hd is feeding power into comuter through usb3 cable
- Thread starter massur
- Start date
- Sep 7, 2013
- 25,980
- 862
- 120,140
If the external hard drive runs from mains power, the USB cable carries only data to/from the host PC.
It cannot send power to the host PC, and even if it did, how do you know that's occurring?
It cannot send power to the host PC, and even if it did, how do you know that's occurring?
thanks for your reply. the external hard drive has its own wall wart power supply. when you shut down the computer the lights on the front of the compute,r including the light on the computer power switch, remain lighted. If you unplug the external hard drive power supply the lights go out. Which tells me that the external power is being allowed into the usb3 cable.
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