4 Things to Know About the Gigabyte B450M DS3H’s SATA Ports
The board has four SATA 6Gb/s ports. That is enough for a basic system with a boot SSD and a couple of storage drives.
It does not include any M.2 SATA slots. All four ports are standard SATA connectors, so plan your drives accordingly.
The port count is typical for a budget B450M board. The DS3H does not try to impress with extra ports, and that is fine for its price.
You cannot add more SATA ports without an expansion card. If you need more than four drives, look at a different motherboard or use a PCIe SATA controller.