J4858B vs J4858C vs J4858D vs JD118B

When viewing the quick specs on HP website, you will find that they have a nearly similar description on J4858B, J4858C, J4858D and JD118B, but with a different model, therefore many clients ask the question:

Are they same transceiver?  What is the difference between J4858B, J4858C, J4858D and JD118B?

Now we list the specifications and compatibility comparison of them, learn the differences and find the right transceiver for your different switch needs.

J4858B vs J4858C vs J4858D vs JD118B

Comparison	J4858B	J4858C	JD118B
Description	ProCurve Gigabit-SX-LC Mini-GBIC Transceiver	X121 1G SFP LC SX Transceiver	X120 1G SFP LC SX Transceiver
Data Rate	1G	1G	1G
Wavelength	850nm	850nm	850nm
Fiber mode	Multi-mode	Multi-mode	Multi-mode
Distance	550m	550m	550m
Connector	LC	LC	LC
DDMI	No	No	Yes
Compatibility	J4894A, J8166A, J8167A J4878A/B, J4907A, J4905A J4906A, J8152A, J8151A J4908A, J4893A, J4902A J4904A, J4903A, J4899A J4900A, J8165A, J8164A	JH329A, JH330A, JG708B J9800A, J9801A, J9979A J9982A, J9980A, J9983A J9981A, J9984A, JG538A JG536A, JG540A, JG537A JG539A, JG920A, JG921A JG922A, JG923A, JG924A JG925A, JG961A, JG962A JG963A, JG315B, JD318B JD319B, JD320B, JD313B J9311A, J9310A, JL256A JL254A, JL258A, JL255A JL253A, JL259A, JL261A JL262A, JL260A, J9573A J9574A, J9575A, J9576A J9585A, J9586A, J9587A J9588A, J9584A, JL071A JL072A, JL073A, JL074A JL075A, JL076A, J9642A J9643A, J9533A, J9532A J9539A, J9540A	JH016A, JH019A, JG920A JG921A, JG922A, JG923A JG924A, JG925A, JG926A JG223A, JG222A, JG221A JG315B, JD318B, JD319B JD320B, JD313B, JG296A JG726A, JH179A, JH178A JH321A, JL223A, JL167A JL168A, JH333A, JH332A JH331A, JG608A, JH103A JH373A

J4858D is the rebranding SFP, it is with the same specification like J4858C.

Conclusion

Those three transceivers come with the same specifications except DDMI interface, and they are individually coded for used with different switches. J4858C is the upgraded version of J4858B, and it can replace the J4858B without any compatibility issues. JD118B is the H3C OEMs transceiver, so it can not replace J4858C.