Features: Mounting magnetic base. USB port GPS receiver. Easy to assemble, save cost and space. Can be used for common smart mobile phone/laptop/desktop computer/tablet PC. Installation Guide: 1.Put the gps antenna into the car, it is generally recommended to put the license plate or glass near the signal line through the tail cap gap into the car. 2.Put the gps amplifier to the car navigation antenna (or mobile navigation) near the antenna. 3.Align the SMA male and SMA female connectors of the antenna connector correctly. 4.the usb interface plug into the cigarette lighter to take 5V power supply. 5.When the GPS power amplifier on the light bulb, it is completed.