Raspberry Pi 4 4G Model B

The Raspberry Pi 4 Model B is the latest computer board from Raspberry Pi. This latest version offers more processing power, more memory and more connectivity, while being backward compatible with projects created on previous models.
What's new at Raspberry Pi 4?
The Raspberry Pi 4 has received a performance boost with an improved processor that gives it similar performance to a beginner PC.
There is now a choice of memory sizes: 2 GB and 4 GB, so that more complex processes can run efficiently.
Two micro HDMI ports allow you to set up a dual screen - earlier versions had a standard HDMI port.
Up to 4K video decoding.
2 USB 3.0 ports faster Connectivity to other peripherals - earlier models have 4 USB 2.0 ports.
Power supply is via USB-C - Raspberry Pi 3 was supplied with 5.1 V via Micro-USB

What's the Raspberry Pi?
A Raspberry Pi is a compact computer board that offers endless possibilities. From the start, the Raspberry Pi has been designed to be easy to use and easy to adapt to what you want it to do.
Just plug in a TV or monitor, keyboard, mouse and AC adapter and you're ready to go. A Raspberry Pi is great because it is suitable for almost all ages. Whether you want to teach children how to program or engineers how to create complex computer-controlled systems - anyone can use a Raspberry Pi.
There is a large selection of "HATs" (Hardware Connected to Top) and other accessories that you can connect to the Raspberry Pi and special functions such as:
Cameras
LCD displays
Motor Driver
Sensors
GPS
Mobile data connection
Digital TV Decoders
Raspberry Pi is one of the best-selling computers of all time, with 25 million Pi Boards sold so far. (Feb. 2019).