USBバスパワーが9Vになって出てくるケーブル。多分USBコネクタの所に昇圧DC/DCが入ってるんだけど、容量の情報はドコデスカ http://www.elecrow.com/usb-booster-cable-dc5v-to-dc9vdc12v-p-1614.html …
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