The MSI B550M PRO-VDH has one M.2 slot with PCIe 3.0 and SATA support
One M.2 slot supporting PCIe 3.0 x4 and SATA 6 Gb/s SSDs up to 2280 length. A single slot handles both interfaces, but expansion is limited to one drive.
One M.2 slot supporting PCIe 3.0 x4 and SATA 6 Gb/s SSDs up to 2280 length. A single slot handles both interfaces, but expansion is limited to one drive.