"DynaDish 5" question about the wireless hardware

Hello Mikrotik Community.

I have a question about the DynaDish 5 equipment.

In the hardware description of the board it says “5 GHz dual chain board integrated”. Does this mean it has to two differently polarized antennas built-in to support mimo? The main question is, does ist support mimo?

Here the datasheet of the equipment.
https://i.mt.lv/routerboard/files/DynaDish_5-161125112942.pdf

greetings
phil

from the pdf: “5 GHz dual chain board integrated into 25 dBi”
dual chain = more than one chain = MIMO: Yes (but also SISO / MISO / SIMO configurable)
H+V: Yes