I have a sled of SanAce fans that have Dell P/N RM4HX-A00 -- I'm hoping they are compatible with an R720, however I saw some references that associated them with 11th generation servers.  Would these be officially compatible with an R720?

 

I'm not certain where to find definitive Dell part number information, it isn't listed in the manual.  If there is a definitive source I could be checking please do let me know.  I would hate to bother the forum for something I could be looking up myself.