Part JD636A is compatible in the following Models:

HPE MSR Router Flexible Interface Cards (FIC)

HPE MSR 8p Async Serial RJ45 FIC Module - JF260B
HPE MSR 16p Async Serial RJ45 FIC Mod - JF265B

HPE NBX 100 Series

HPE NBX CALL PROCESSOR - JE565A

HPE Router High-performance Multifunction Interface Module (HMIM)

HPE MSR 16p Enh Async Serial HMIM Mod - JG445A

HPE Router Transit Cables

HPE X200 Transit Plug D25F Single Cable - JD636A