USB Power Supply Cable 12V (500mA max.) with DC Barrel Plug 2.1/5.5mm.
Do the math: To achieve 6W (0.5A @ 12V) output power, you will need a USB port that can deliver at least 1.25A @ 5V at an expected efficiency of 85-90%.
Total length about 90cm (3ft).
Power supply cable for devices and CANADUINO® DIY soldering kits with 2.1/5.5mm DC barrel connector voltage input.
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