SFP port LAGG member not working on GS752TPv2 (Defaulting to 100mbps link on native ports)

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IOTdiot wrote:

... the switch is supposed to set the speed of the port, and that if the nic supports 10/100/1000 then the nic/router will update on its side of the line to that speed of whatever device is connected

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For the standard GbE ports, yes of course, for GbE (and faster) automatic negotiation is mandatory, on both ends (the switch and the NIC on the firewall side). The reason why this might not happen between one of firewall ports and the switch 1000MBase-T ports can be related to the fact that this NIC is not properly initialized.

For the SFP ports - designed for fiber connections - it's a little bit more complex (read: restricted). The SFP module can't do any speed adoption, so it's the SFP garage (slot) which will run on the nominal speed of the SFP module plugged, and for a GbE SFP module this is 1 Gb (and never 100Mb or 10 Mb as in the case where the auto-negotiation [which does still happen between the SFP GbE and the NIC] does not manage to get up to GbE speed - so the SFP "interface" expects Gb, the copper in on 100 Mb and the link will never come up.

You can try to create an Ethernet loop between the two Inhell NIC ports and check the speed of both interfaces.

Again, I've seen several occurences where the Inhell multi-port NIC cards had only the first port enabled and workable, the second (or the other three) are not workable. This is a driver problem on the U**x (e.g. FreeBSD, but it happened on Linux for example, too)  side.