【better after-use experience】 Temperature reduction provides an expected longevity extension and higher performance of a critical network component,These fans are overall very helpful for devices that get a bit hot and start to throttle down. | 【choice of most users】It works great ,for DIY cooling fan or as an additional cooling ,fan for your gaming needs. like as router, cabinet, Modem, DVR, Receiver, Streaming ,boxes, x-box, SSD, Security Camera NVR, andriod box, stereo, T-Mobile gateway. Good balance of quiet and airflow. keeping electronics cool .Three specifications of fans, suitable for more usage scenarios . | 【Custom shock absorbing feet】 four feet using environmentally friendly rubber, after testing, the softness of the feet that can smoothly grab the desktop, not too hard and desktop resonance . | 【Fan parameters】Connecter: USB; Cable Length: 55cm Or 21 inches; Bearing type: Sleeve ; Life: 35000 hours / Dimension: 360mm(L) x 120mm(W) x 25mm(H) / 4.7x4.7x1 in. per fan; Rated Voltage:5V 0.2A; Speed: 1500RPM; Air flow: 56.7CFM; Noise:23dBA . | 【Warranty & Packing List】Warranty: One-year quality assurance. Please contact us, If the product has any quality problems, it will be refunded within 90 days or replaced within one year | Packing list: A finished product .