Raspberry Pi 4 Computer
It's roughly the same size as its predecessor, but make no mistake: the Raspberry Pi 4 Model B is a serious upgrade over the 3 B+. Both its quad-core CPU and GPU are speedier, and it has two Micro HDMI ports capable of running two 4K monitors at once. Two of its four USB ports are now USB 3, and it can be outfitted with up to 4GB of RAM. All of these upgrades make it even better as the brains for custom builds or media servers, but also allow the Pi to function as a lightweight desktop replacement, ultimately giving more access to modern computing.