Do CI1 allow fullduplex recording/monitoring?

I’ve not found a presentation board, so I introduce myself directly here.

I’m going to buy a second hand CI 1, as my first Audio card. (Being me on low budget)

I’ve searched everywhere but I couldn’t find any info about fullduplex recording/monitoring capability of the CI1
(I accidentally discovered this feature in the description of an Icon G series, that I could buy as alternative choice)

Is it because it is an obvious feature or is it because the CI 1 card is not capable? :question:

I hope someone will be so kind to answer.

Thanks in advance.