http://www.hardwarebook.net/connector/bus/usb.html
http://www.hardwarebook.net/connector/bus/usb_tech.html
usa un +5 Vcc sul pin 1 e metti a GND il pin 4
il Range del + 5 e'
Supplied voltage by a host or a powered hub ports is between 4.75 V and 5.25 V.
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 CIAO FABRIZIO .. CORRI TRA LE NUVOLE COME FOSSERO DUNE
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