A:Answer The memory slots are located on the upper interior right-side panel (opposite the removable, vented left panel), behind the front power button and dvd drive. They are in plain view and easily accessible once the side panel is opened. Note that the RAM in this system is the smaller type usually associated with a laptop PC (Small Outline Dual Inline Memory Module, or "SODIMM"), rather the somewhat larger modules found in many desktops (Dual Inline Memory Module or "DIMM"). This model desktop comes with 4gb of DDR4-2666MHz SODIMM RAM, but can support a total of 16gb.