This are items I am not knowledgeable about but will answer any questions I can. I got these from a former telecom installer/technician who retired about 10 years ago. They are NOS or New Old Stock.
From what I can determine, these are Fiber Optic MULTPLEXER units. There are 3 of them. If you are looking at this listing, you know a lot more about these than I do. They are NOS or new old stock and were in sealed bags when I got them. Two of them are made by ARRIS in San Jose,CA. One is made by AURORA in Santa Clara,CA. The Aurora is a OP34M10S-1-99-AS. Rev.B. One Arris is a OP35M8M-1-99-AS Rev.B1 and the other is a DP35M40SoUZOS-0LB-AL Rev.A. What you see is what you get.
Guaranteed to please the new owner or I'll buy it back. Check my response.
ing complies with ’s air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws.

This listing complies with ’s air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws.

This listing complies with ’s air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws.