8-14  Field Replaceable Unit   
No.  Order Number  Part Name  Qty.  Remark 
C32  051-002188-00  Multi-function Encoder Board PCBA  1 
Not including the connection cables 
the encoders are soldered on the PCB instead 
of plug-in in EHF037F 
C33  049-000786-00  trackball board silicon key  1 
C34  051-002195-00  Trackball Board PCBA  1 
Not including the connection cables and the 
silicon button pad 
50mm Mechanical Trackball 
Not including the connection cables