Part
21-43868-05
is compatible in the following Models:
DIGITAL 3000 Server series
DIGITAL Server 3000 - FR-B40WW-AC
DIGITAL 5000 Server series
DIGITAL Server 5000 - FR-B50WW-AA
DIGITAL Server 5000 - FR-B50WW-AC
DIGITAL Server 5000 - FR-B50WW-AX