The B550 is a motherboard chipset designed by AMD for use with its Ryzen processors. It supports the latest PCIe 4.0 technology, allowing for faster data transfer rates between components like graphics cards and storage devices. This chipset is popular among gamers and content creators for its balance of performance and affordability. B550 motherboards are compatible with both 3rd and 4th generation Ryzen CPUs, providing flexibility for users looking to upgrade. They typically feature multiple connectivity options, including USB 3.2 and Wi-Fi 6, making them suitable for modern computing needs.