1) Laptop Cooling Pad with 3 fans and dffective heat dissipation prevents notebook from overheating. 2) Low speed (600rpm) = low noise level (16 dba) 3) M. T. B. F.: 80, 000hrs 4) Size: 31.5*25*2.5cm 5) Plug & play, usb powered 6) Compatible with Win98 se/ Win me/ Win 2000/ Win xp/ Win vista and Mac os9/o.