Does the Minisforum UM790 Pro support 2.5-inch drives?

No, the Minisforum UM790 Pro sacrifices 2.5-inch drive support to fit two M.2 slots and two SO-DIMM sockets in its compact 13 x 12.6 x 4.7 cm frame. Dual NVMe is the entire storage story, and that’s enough for most users.