The problem that Paul mentions is a serious issue because apart from computer components like drives they also do dodgy battery cells, Pen drives, wall chargers, power supplies, etc and then it gets worse because you get decent quality branded equipment that has been unintentionally manufactured using maybe just one fake component that lets the whole thing down, and this can find it's way into many areas of industry, utilities and medical where it could be life dependant. I have seen rolls of fake cable branded as being a quality item but when tested by the genuine OEM the copper was very low grade with impurities, and even some PLC's that were very obviously fake and yet people still take a chance and buy cheap asian goods like VFD's for woodworking machinery.