LB1 High Performance Cooling Pad Cooling System Lightweight w/ 2 Fans for HP 2000z-2d00 Notebook PC Notebook Laptop (Black)-18 Months Warranty 2-fan cooling system effectively pulls heat away from the bottom of notebook and vents it through the back. High thermal heat dissipation prevents overheating . Helps notebook to operate at full speed even while running high performance applications . Lightweight and compact . Feet fold out to provide wrist support with a 10 angle. Powered by 1 USB cable. Plug-and-play: no drivers or software needed. Compatible with all notebooks and laptops. Rated Voltage: DC 5V. Speed: 1800 RPM. Noise Level: 22 dBA. Max Air Flow: 22 CFM. Tolerance: 10%. Bearing: Oil Sleeve. MTBF: 20.000 hrs. Dimensions: 300*230*15mm .