hvala na info
da, i mislio sam da je paralela
a sad se nebi baš htio upuštati u to da spalim usb ili matičnu, toliko nije važno
a google-ao sam i ovo
Citiraj:
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You cannot connect two USB ports "in series" to get 10V. By doing so, you are connecting the +5V pin of one port to the ground pin of another, thus completing a circuit between +5V and ground. They are not like batteries, and share a common ground. Your USB hardware almost certainly has fail-safe power electronics that will instantly disable both ports (and, if it doesn't, you'll damage the computer).
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ili neće raditi uopće ili pa ću shebati USB-e, a sva 4 redovito koristim tako da neću više dirati, bolje da nabavim 12V adapter