OTraki USB Hydraulic Fan 4 cm 3 Adjustable Speeds Black Practicality Mini 40 x 10mm 3500 4200 5000 RPM for PC PS4 Router

【4cm Cooling Fan】This 4 x 4 x 1 cm OTraki USB fan is equipped with a 3-speed adjustable switch to meet your different cooling needs. Compact and powerful, it protects your devices and extends their service life. 【L/M/H Speed Switch】This fan offers 3 speed levels: 3500/4200/5000 RPM with air flow suitable for each setting. Choose the power to suit your needs, with controlled noise levels for discreet everyday use. 【Powered by USB Type-C】Perfect for cooling PC, laptop, TV box, receiver, AV cabinet, PS4, projector or router. This fan plugs into any USB Type-C port. (Not recommended on USB hub not powered.) 【Multiple Protection】Painted metal grid on both sides protects your fingers and cables from blades. The protective glue in the corners strengthens the wear resistance and prevents breakage for safe use. 【High quality and compact design】 Its black metal grid is rust proof and does not fade. Equipped with durable hydraulic bearings, this compact 1.6" fan fits perfectly in tight spaces while providing reliable cooling performance.