Two fans provide a constant air flow to properly cool the laptop Compatible with all laptops up to 15.6"Adjustable height to meet different needsPlug & play - USB connectionLow noise level Compatibility Notebooks Notebook max size 15.6" Fans number 2 Fans dimensions 125 x 125 x 15mm Fans speed 1200RPM Speed adjustment Yes Illumination Yes, Blue LED Noise level 17-26dBA Air flow 56CFM Connection USB Voltage DC 5V Power consumption 3W Color Black Product dimensions 340 x 265 x 30mm Product weight 420gr