1. The dual sides of Type-C ports are consistent so it can be inserted along either positive or negative direction. 2. Type-C device is connected with the projector or display with VGA interface, supports 1920P*1080P and can be connected with Type-C port to charge Type-C device. 3. While connected with VGA display device, USB port can also be used for connecting such USB devices as U disk and 4. USB3.0 supports high speed 5Gbps data transmission speed and Type-C charging supports 20V3A at maximum. 5. Better system compatibility makes plug and play possible without the need of driving or connecting external power. 6. Excellent metal aluminum enclosure can reduce the interference of transmission by external electromagnetic wave effectively.VOKAMO