hi
would you please check this serials ?
FDO1920F1VT  FDO1920F1RW   related cisco  SWITCH WS-C3750X-12S-E
FDO1644X067   FDO1624Z17Y   related cisco  SWITCH WS-C3750X-24S-E
FCZ15337OTY OR FCZ153370TY  related cisco3945/K9
original or fack ?are these oem ?
please help me
thank you