... fan:3000RPM price/pcs:$2.7 OEM mini usb laptop cooler USB self power supply mode, plug and ... . Under cooling pad have three high performance and quiet cooling fan.With the powerful cooling pad it ... from the box, radiator connection will end insert USB interface, notebook,At the other end, open ... brands, type, size of notebook computers.Using the USB interface design, no external power supply, no drivers ...