The B550 has four M2 slots, which is enough for most builds. It also has a variety of ports, including six SATA III ports, two USB 3.1 Gen 1 ports, and one USB 3.1 Gen 2 port.
The B550 also has a built-in graphics card, which makes it great for gaming and other multimedia tasks. Additionally, the B550 has a variety of other features, such as an Intel® I219V NIC and a Realtek RTL8111G chip. All in all, the B550 is a powerful motherboard that will suit most needs.