Eluteng USB Fan, 4 cm, 2 Rows, 3 Levels of Air Flow Adjustment, USB Fan, Cooling Cooler, Powerful, Tabletop Mini Fan, Small Blower, PC Cooling Fan, Ball Bearing Motor, 5 V, Long Operation, Thin, 40 mm, Aquarium, Router, PS4, PS3, PS2, Xbox (4 cm)

4 cm small design USB fan size 4 x 4 x 2.5 cm (excluding metal frame), mini and lightweight design can be used to cool equipment such as computer hosts and routers. Cools electronic products even in small gaps other than the desktop. Note The 4cm fan is small and will increase the speed for heat dissipation, so there will be some noise when using.Double USB Fans The latest two fans have a better cooling effect than a single fan. Designed to cool electronic devices such as external hard disk boxes, smartphones, game consoles, and computers. Since it is a fan, it prevents problems such as heat build-up and thermal runaway.Plug and Play The computer fan does not require any troublesome wiring, and uses a USB interface, so you can plug it in and use it. Equipped with a wind speed adjustment switch, the air volume can be adjusted in 3 stages. 3 levels of wind speed L 4000rpm / M 4800rpm / H 5500rpm +/- 10 (x2), Noise L 23 / M 25.2 / H 27.3dB. The air volume can be selected according to the usage environment and application. Connect two fans with USB cable and run at the same time for better efficiency.Double ball bearing design The pc fan adopts a high quality double ball bearing motor, which has a lifespan of more than twice that of a normal fan and can work continuously for a long time. Equipped with a metal fan guard, there is no need to worry about accidentally inserting your finger during operation and getting injured.Wide range of practicality The 40mm fan usb is not only suitable for cooling devices such as computers, routers, and HDDs, but also for AV equipment and game consoles. Just by connecting to a device with a USB terminal, you can easily cool it without the hassle of wiring.