When I plug my new external harddrive, my other usb ports stop working?

Barracudaaa

New member
I bought a new HDD seagate 1 terra,(the external is plugged in an electricity socket) the problem is when i plug it in my laptops usb port other usb ports stop working i think its bcoz its taking a lot of energy(just guessing!!). I tried to plug the external on another laptop and same thing happened!! Whats causing this??
 
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