USB power boost line DC 5V to DC 9V / 12V Step UP CABLE

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  • External negative pole USB cable USB to DC5.5 * 2.1mm charging cable power supply cable hole 9V12V boost lines USB cable [Introduction]: by charging treasure to power other devices. Such as: routers, USB lights, USB fan, radiator, 5V mini speakers, and so on ... DC power plug size: diameter: 5.5mm, inner diameter: 2.1mm; positive with 1 meter cable length