# Is it possible to have 2 x 3:2 MIMO with 2 antennas?

I was going through a datasheet of an HPE M210 802.11n Access Point. According to the specs it has 2 internal antennas and supports 2 x 3:2 MIMO. My question are: 1) is it actually possible to have 3 receivers given that there are only 2 antennas 2) in this particular case 2 x 3:2 MIMO consists of only 2 radio chains, right?

Thank you in advance

In general, given an antenna array with $n$ elements, any subset of those elements could potentially be useful, so you have the powerset of combinations or $2^n - 1$. (Minus one because having no antennas connected is of course not useful.)