I was going to reply to this a couple of days ago, but couldn't find my adapter. Finally found it in my pile. I have an AOpen AX37Pro. Don't know if the adapters will be the same, but maybe you can find some information that will help you out.
This is a 2 port extension with a 10-connector plug (only 8 of which have wires run to them). Part numbers as they appear on the package:
AOpen P/N: 50. 89901. 001
Foxconn P/N: CUBC001S-B62
There is no number on the bracket itself, only on a label on the plastic bag.
If you think it's what you're looking for, I can snap a pic and post it for verification. Also, I'm not sure, but your manual may include a list of parts that you can use.
HTH