The Dell OptiPlex 3000 Micro runs DDR4-3200 in two SO-DIMM slots

Dell’s business mini uses DDR4-3200 SO-DIMMs across two slots, max 64 GB via 2×32 GB. This is a solid, predictable config for enterprise deployment — standard laptop RAM, easy to source, easy to replace. Nothing exotic, and that’s exactly what IT departments want.