      Samsung   USB

1.  ,       .
2.    ,    ,       .
3.   ChangeSN.exe,    15 ,  Change Serial Nmber via USB.   .
4.  , ,  SN .

 Xerox:
   Xerox     10 , :
1.   ChengeSN.hd      , .
2.   ChengeSN.hd  usbprns2.exe.
3.  , ,  SN .
