Fake DDR5 Memory Found on Japanese Second-Hand Platform: Actually Relabeled Empty Plastic Chips

Counterfeit DDR5 SODIMM memory modules have surfaced in Japanese second-hand markets, posing a significant risk to consumers. These items are falsely labeled as products from major manufacturers like Samsung and SK Hynix. The modules appear on platforms such as Mercari and Yahoo Auctions, often listed as broken or defective hardware.

Hollow plastic blocks with no internal circuitry masquerading as genuine memory chips.

Physical inspection reveals that the memory chips contain no internal circuitry. The components are hollow blocks made of plastic or fiberglass. Stickers claiming Samsung branding are applied over die markings that actually indicate SK Hynix. The die edges appear abnormally smooth and white, suggesting they have been shaved down to remove original identifiers.

The assembly quality of these counterfeit modules is poor. The integrated circuits are misaligned on the printed circuit board. Rough handling during assembly is evident in the placement of the components. Desktop modules with heat spreaders may hide these defects until the hardware is tested.

The exact volume of these counterfeit modules in circulation remains unclear. Reports rely on specific user-submitted images and observations from second-hand platforms rather than a comprehensive market audit. Tom's Hardware has reported on the discovery of these relabeled empty plastic chips.