Q: Are all 500 Series modules really compatible with one another and with the different chassis from various manufacturers?
A: As long as the module(s) in question adhere to the API-developed 500-series standard, there should be no compatibility issues. The vast majority of modules do stick to the standard. Some modules and some chassis offer extended/proprietary features not found in the API standard. However, we have not encountered any compatibility issues with these — the extra features just may or may not be supported by other modules or chassis.
