The Raspberry Pi 4b use the new USB-C power connector. Its inclusion ensures an additional 500mA, providing 1.2A for USB devices. There is also the provision of two USB 3.0 ports alongside two USB 2.0 ports. It has great potential for high speed USB devices to be connected to the Raspberry Pi 4. The USB-C connector also supports OTG, allowing you to connect the Pi directly to your PC's USB port and access the device locally.
The Pi 4 is actually equivalent to a micro computer, and basically has the functions that a computer should have. Raspberry Pi is very friendly and convenient in the development of Internet of Things, Web development, machine identification, automatic control and other electronic equipment applications and network functions.