Allows ZTE Mobley OBD device and any other obd/obd2 powered device to be used outside your vehicle. Adapter works anywhere a usb port is available. We recommend a 450mA power supply for better results. "PeraltaProducts" is the exclusive supplier of this product, beware of anybody else selling our product. Construction: a two piece device, usb plug and obd2 to 5.5mm female plug design. Produced to the highest quality standards by a small startup company in Kansas. Product ships in a frustration-free package, white box or plastic bag.