usb powered and most efficient metal cooler pad with 3 built-in fans for laptop computer
usb powered and most efficient metal cooler pad with 3 built-in fans for laptop computer 3 built-in 60mm fans for maximum thermal heat dissipation . compatible with usb 1.0 amp usb 2.0 . built-in on off switch aluminum panel with heavy-duty design and silver anodized finish . ergonomic designed angle for easy typing . plug and play no external power supply is needed no software installation is required . airflow 28 cfm . fan speed 1500 rpm noise 25 dba voltage dc 3 v power