We are still waiting for AMD to formally release its B550 chipset, though based previous leaks, we know its hardware partners have several planned B550 motherboard models. There’s now even a picture of an actual B550 motherboard that is out in the wild. Not to be confused with AMD’s B550A chipset for OEMs, B550 is a bit of a different beast

Source: Hot Hardware – First AMD B550 Budget Ryzen 3000 Motherboard Leaks With PCIe 4.0 Support