Features: 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. Condition: 100% Brand New Item Type: Computer Case Fan Material: PVC USB Cable Length: Approx. 85cm / 2.79ft Fan Size: Approx. 120 x 120 x 35mm / 4.7 x 4.7 x 1.4in Speed: 1200 Heat Dissipation: Air cooling Noise: 18dBA Package Included: 2 x Computer Case Fan