AAB Cooling NC45 Black Laptop stand is the first AAB COOLING stand that has five fans!The PS 4 Cooling Fan is perfect for very large notebooks that need a strong and solid cooling base. One 120mm fan and four 70mm fans are suitable for efficient cooling. The weight Laptop Tray Cushion of 1.11 kg ensures stable operation, and the two Start / Stop buttons allow you to turn on a single 120mm fan or four 70mm fans. It is also possible to switch on all fans so they work at the same time. The lower part of the base is also well shaped to keep the knees cool, so as to use the notebook also in the bed. Fans are properly protected to prevent e.g. bed linings from feeding in. Laptop Cooling Pad is equipped with pads to prevent the desk surface from scratching. Technical data:Dimensions: 380 x 265 x 55 mm (L x W x H) Material: Plastic + aluminum Grid, Plug & Play Version- just plug it to make it work, Data Transmission: USB 2.0 & 1.1 ports to 480 Mbps, Power supply: USB 3.0 / 2.0 / 1.1 / 1.0, 5V DC,Fans dimension: 1 x 120x120x25mm, 4 x 70x70x15mmNumber of fans: 5, BLUE LEDFan speed (regulated): 120mm: 0~1000 rpm ± 10%, 70mm: 0~2000 rpm ± 10%Airflow: 74 CFMNoise: 15dB(A) (fan 120mm), 21dB(A) (all fans)Adjustment of inclination: additional legs that increase the slopePower cord length: 60 cm Bearings: HydraulicLifespan: 50000 hApplication:- Compatible with all notebooks / laptops of different matrix sizes. The size of the Laptop cooler does not matter here if the difference is within a few centimeters, but the sensitive areas where the elements are potentially exposed to damage due to excessive temperature. Recommended compatibility: notebooks from 15,6″ ~ 18,4″. Please refer to the dimensions of the Cooling Pad.