Hi,
A similar question has been asked before but there was not an answer for that thread.

In the spec of this viper 4k it has listed a card reader. It obviously not referring to the sd card as that is also listed.
But what card reader is it ? is it a smart card reader ? and what is it likely to be used for (subscription?) excuse my ignorance please, it is just often you see it listed along with a CI but not in this case.

Or is it internal reader like my old expired technotrend.

Regards

Fozzy