Single fans usb notebook cooling pad 1)The wind quantity 35 to 70 CFM 2)Noise sound 16~21 dBA 3)Work rate:1.75 W Single fans usb notebook cooling padNumber:BW0217590Features:1.Material: plastic + iron net,2.Product size: 370 * 270 * 36~54 mm,3.Fan size 140 x140x15mm,4.Turn speed 700 ~ 1400 + 15% RPM,5.The wind quantity 35 to 70 CFM,6.Noise sound 16 ~ 21 dBA,7.Electric pressure USB 5V DC,8.Power ...