I have an old Mac Pro I decided to upgrade. I found a company on eBay selling "16GB 4X4GB DDR2 MEMORY RAM PC2-5300F 667MHz ECC FB-DIMM" for a good price so I bought two units (32GB total). (Kingston PN# F51272F51)
I installed the memory and all 32GB of the RAM is showing in System Report, but it does not show as ECC.
Here's about the Mac itself:
Here's the memory section:
According to Wikipedia, most Registered ("Buffered") RAM is also ECC, but Buffered RAM can also be non-ECC RAM.
Is the RAM I purchased ECC?