How many NVMe SSDs does the Minisforum UM790 Pro support, and does it have a SATA bay?

The Minisforum UM790 Pro runs two PCIe 4.0 NVMe SSDs with no SATA bay. It skips the 2.5-inch SATA bay entirely, offering two M.2 2280 slots both running PCIe 4.0 x4 NVMe. If you’re building a fast all-flash system, this is the more modern approach — just plan for NVMe-only storage.