Redundant cards Issue in M Serie

Dear Friend

As i checked in Deltav 13.3 at M Series Controller ,all redundant cards (Analogue input  / output , Digital input / output) are described 8 channel. and it seems  there is not any way to have redundant cards in M series Controller with more than 8 channes , but in product-data- DeltaVTm  M-series Traditional I/O (2018) which is about M series card some cards can be found redundant with more than 8 channel such as

AI Plus, 16-Channel, 4-20  mA HART

AO Plus, 16-Channel, 4-20  mA HART

DI Plus, 32-Channel, 24V DC  dry contact

DO Plus, 32-Channel, 24V DC High-Side

please guide me to know about this discrepancy

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