USB to 5.5mm / 2.1mm DC Booster Cable - 12V Output
This cable is kinda fascinating - it has an integrated boost converter, so you can plug it into any USB port (from a computer, battery pack, etc) and
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Generic USB 5V 5.5 X 2.1mm To DC 12V Power Boost Step Up Converter Cable
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USB 5V to 12V DC PIN 5.5 x 2.1mm Step up Converter - Router UPS Power supply (2M)
USB to 5.5mm / 2.1mm DC Booster Cable - 12V Output : ID 2778 : $6.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Adafruit USB to 5.5mm/2.1mm DC Booster Cable - 9V or 12V Output 5457 , 16,50 €
USB Step Up Converter DC 5V to 12V
DC 5V to DC 9V 12V Power Supply Boost Line Step UP Module USB Connector Adapter USB Cable 2.1x5.5mm 3.5x1.35mm Plug – לקנות במחירים נמוכים בחנות המקוונת Joom