Dell H740p - Why are there 4 different P/Ns for PCIe version? Are they all compatible?

Dell H740p - Why are there 4 different P/Ns for PCIe version? Are they all compatible?

03JH35                  Dell PERC H740p 12Gb/s 8GB NV PCIe-x8 RAID Controller

039M19                 Dell PERC H740p 12Gb/s 8GB NV PCIe-x8 RAID Controller

01M71J                 Dell PERC H740p 12Gb/s 8GB NV PCIe-x8 RAID Controller

0DPNHJ                Dell PERC H740p 12Gb/s 8GB NV PCIe-x8 RAID Controller

Are there any difference with the actual controller?  Maybe it is a different bracket height?  Or manufacturer of the card itself?  Just trying to make sure there are no real differences with functionality.

Thank you