AAB Cooling NC81 Black Laptop stand is yet another AAB COOLING laptop cooling tray, which has five efficient and quiet fans (1 x 120mm and 4 x 70mm)! Ideal for large laptops up to 17 “. The gaming laptop cooling provides a stable base for your laptop, while the rotary potentiometer enables simultaneous fan adjustment. Five fans take cool air from below the laptop fan cooler and direct it to the laptop surface while providing low noise emissionsaulic bearings work very quietly. When setting the lowest fan speeds, noise is practically inaudible (SUPER SILENT mode). The lower part of the laptop lap fan has a 5-step tilt adjustment to ensure the highest ergonomics. An additional advantage is the small legs that increase the angle of inclination in the flat position, the anti-vibration pad and the blocker to prevent slipping of the laptopnical data:Dimensions: 415x260x35~180mm (L x W x H) Material: Aluminum + Plastic – glossy frameWeight: 1000gPlug & Play Version- just plug it to make it work, Data Transmission: USB 2.0 & 1.1 ports to 480Mbps, Power supply: USB 3.0/2.0/1.1/1.0, 5V DC,Power consumption: 0,5A~0,9A / 2,5W~4,5WFans 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: 125 CFMNoise: level of 11 dB(A),Tilt adjustment: Five ranges and additional legs providing more anglesSize of two front blocks (bookends): 42x16mm (L x H)Power cord length: 60cm Bearings: HydraulicLifespan: 50000hCompatible with all laptops of different matrix sizes. The size of the laptop 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 laptop knee stand compatibility: notebooks from 15,6″ ~ 18,4”. Please refer to the dimensions of the stand.