My SG-3100 runs with 1000/50, but my segment is not good and FQ_codel limits the Speed far away from Hardware Limit.
If i deactivate FQ_codel, or run up to 900+GBit but 100ms+ of ping time.
That is it not worth.
Is a nice low Power high speed device.
I set my Pace to forward everything to the psSense firewall, then normal firewall rules on pfSense to port forward to the inside. pfSense is in the DMZ with the outside address. I have not had any issues.
Then things might be actually easier for you.
Just script a SSH session that connects and download the config file ones a day.
There is not much to it.
The only multiport igb NIC guaranteed to work there is the one we sell which was extensively tested.
We have seen several reports like that specifically for multiport cards. The card and port status are detected correctly but no data can be passed.
Be sure you are running the latest Coreboot version.