Yeiwenl Quiet Dual 120mm USB Fan Dual-Ball Bearings, with L/M/H 3-Degree Speed Controller High Airflow Cooling Fan for Receiver DVR PlayStation Xbox Computer Cabinet Cooling

Widely Used: This usb cooling fan works great for router, Mac Mini, PlayStation, cabinet, Modem, DVR, Receiver, Streaming, boxes, x-box, SSD, Security Camera NVR, andriod box, stereo, T-Mobile gateway and other electronic equipment.
^^ Dual ball bearings: Durable dual ball bearings have a lifespan of 60, 000 hours, and allow the fan to be flat or upright and easy to use. Fan is beautiful and takes up little space.
^^ Dimensions: 120x120x25mm / 4.7 x 4.7 x 1 in per fan;
Rated voltage: 5v usb;
Rated current:
L: 0.2A, M: 0.3A, H: 0.4A;
Speed: L; 1000rpm, M: 1200rpm, H: 1500rpm per fan; Airflow 52.6 cfm per fan(total 105.2 cfm);
Noise: 28dBA;
Bearing: Dual-Ball
Bearings;
Lifespan: 60, 000 hours ^^ Features a multi-speed controller to set the fans speed to optimal noise and airflow levels. ^^ Plug and Play, no assembly needed! No power supply included!