Feature:1. Mute USB interface fan, suitable for all kinds of routers, TV modem, widely applications.2. Small and compact size fan to effectively cool down your device, practical accessory.3. 18dBA low noise, quiet heat dissipation, save the quiet environment, make DIY so simple.4. Long life bearing, high quality material manufacturing long life hydraulic bearing.5. Multiple power supply modes (mobile power supply, mobile phone charger, computer USB interface), USB silent fan support various power supply modes.Specification:Condition: 100% Brand NewItem Type: Computer Case FanMaterial: PVCUSB Cable Length: Approx. 85cm / 2.79ftFan Size: Approx. 120 x 120 x 35mm / 4.7 x 4.7 x 1.4inSpeed: 1200Heat Dissipation: Air coolingNoise: 18dBA.Package List:2 x Computer Case FanNote:Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.