Part
FR-PCB4U-AD
is compatible in the following Models:
DIGITAL 3000 Server series
DIGITAL Server 3000 - FR-B44WW-AX
DIGITAL Server 3000 - FR-R2B5W-AA
DIGITAL Server 3000 - FR-R2B5W-AX
DIGITAL 5000 Server series
DIGITAL Server 5000 - FR-B56WW-AA