SI = Spectrum Intelligence
if the access point is CleanAir 2xxx and 3xxx models, then you can configure CleanAir. The 1xxx models only support CleanAir express and the new 1850 don't support any CleanAir.
if you are looking at any CleanAir guides, the AP's are pressure much interchangeable for exception that the 3xxx has the ability to add a module to the AP.
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