1.The product is designed with high quality ABS shell, stable performance and quality assurance 2.The appearance of the product is exquisite and compact, with shell design for long service life 3. This adjustable USB speed controller, 18W super high power, so that the speed is no longer limited, large adjustable range 4. Extendable cable socket design, can be connected to Type-C cable, no longer need to pay attention to the USB data cable breaks the distance brought about by the trouble 5.USB plug-in, easy and convenient to use, input voltage 5V, current 4A, maximum output 9V, 2A. The big role of a small speed controller, USB fan is fully compatible, can be applied to laptop cooler, car fan, desktop fan, mobile phone cooling fan Name: USB speed controller Usage: USB plug-in Data cable plug-in Input: 5V 4A Output: 5-9V 2A Maximum output: 9V 2A Maximum power: 18W Rated power: 15W Input jack: USB/Type-C Colour: Black Material: ABS Package Contents: 2 x USB Speed Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.