The Raspberry Pi 4 Model B is a single board all-in-one computer with a Quad Core processor running at 1.5 GHz, 4 GB DDR4 RAM, and a 128 GB SSD capacity. It features dual monitor support, Videocore VI graphics processing, USB 3.0 and 2.0 connectivity, and comes with an enclosure, PSU, and 128GB SD card. The operating system is not included.