USB FAN 1.Applicable for laptop, PC etc. 2.The metalline ... freely,flexile,slick 3.Not need external power USB FANUSB FAN,COMPUTER FAN(QH-0404) 1.Applicable for laptop, PC etc.2 ... ,slick3.Not need external power supply,directly plug into the USB port,consumed currentless than 150mA4.With high quality motor,soft ...