USB 4-12 V Lüfter Stufenlos Controller Regler Geschwindigkeit Variabler Schalter Modul UK
2,27 €
And the scope is wider! The non-adjustable USB fan is a 5 volt electric fan motor, while the two-speed fan has a boost circuit board inside. When placed in the second gear, the booster board raises the USB 5 volts.
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