... power adapter necessary, conveniently powered through USB port. New USB 3 Fan Notebook Cooler Cooling Pad Stand for ... damage to components.True plug and play for USB device like mouse, keyboard, card reader, ... no power adapter necessary, conveniently powered through USB port.Power source supported easily by the plug ... Includes:1 x notebook cooling pad New USB 3-Fan Notebook Cooler Cooling Pad Stand for ...