laptop cooling pad ,1.usb interface ,2.lovely cartoon design 3.Rotationl Speed:3200-3300 4.quietly,26db,5V ,size: 31*26*4.5c Detailed Product Descriptionlaptop cooling pad 1.usb interface 2.lovely cartoon design 3.Rotationl Speed:3200-3300 4.quietly,26db,5V size: 31*26*4.5cmweight:460gusb interfacecategory: ABS+ electronical components