1)induction switch is available, when the laptop is put onto the pad, the pad will work automatically. 2) 3-Ports USB2.0 hub built-in with USB2.0 retractable cable 3) Single port 5 in 1 card reader (SD-MS/Pro, MMC, SM, XD) 4) Foldable and compact design of cooling pad system with 2 large, high-performance And extra quiet fans built-in which absolutely help to dissipate the heat air Away from underneath the notebook computer for cooling down your system 5) Extremely heavy-duty construction of the cooling pad to provide weight or pressure 6) Power source supported easily by the plug-and-play USB connection as a self-power Mode 7) Convenient reliable and comfortable to carry7) No need for any installation8) Compatible with any notebook computers Inner packing: Leather bag + Gift Box