Temperature monitoring Mellanox ConnectX-3

Hi,
I have newley installed a Mellanox ConnectX-3 in my TrueNas Scale machine and I would like to know the temperature of the card. Is there any way to monitor?
When I touch the cooling fins they feel much warmer then the ones on my Intel X710-DA2.

As far as I know the connectx-3 don’t have temp sensors, at least my doesn’t have one