Memory prices continue to soar, and the second-hand market is inundated with counterfeit products. Recently, a user on platform X shared their experience of purchasing a severely counterfeited Kingston FURY series memory module from the second-hand market. The fraudsters had cleverly relabeled DDR4 particles and soldered them onto DDR5 printed circuit boards (PCBs). Visually, the counterfeit memory module appeared indistinguishable from the genuine product. However, upon closer inspection and disassembly, several telltale signs emerged: the PCB was coated with excessive flux residue, some solder pads remained unused, and the number and arrangement of particle contacts deviated from DDR5 specifications. Such counterfeit products are prevalent on personal second-hand trading platforms and pose a significant challenge for consumers to identify based solely on appearance.