Rasberry pi model 4 is the cheapest and newest Rasberry pi computer. It can be used as media centers, file servers, retro games consoles, routers, and network-level ad-blockers, for starters. build tablets, laptops, phones, robots, smart mirrors, to take pictures on the edge of space. Features of rasperry pi are endless. This was very interesting to me because I didn't think a little CPU could do so much. It needs Ethernet in order to be powered. Its capable of playing 4K video at 60 frames per second. You can also browse the web and run on most computers. To the right are components of raspi 4. Enjoy!