Comment 13 for bug 1578141

Just talked to a SuperMicro tech agent and has sent me a non released BIOS update for the X9DRI-4LNF motherboard, which fixes Spectre and several other fixes, including the enumeration problem of the ethernet jacks of this board.

This BIOS update is v3.3 and dated from May 2018, so pretty recent, but as the board is EOL there won't be any further updates and this one will be the most up to date.

You can find the BIOS update file here:
https://drive.google.com/open?id=1PfWZXd-0DWuJ6MJh4OneeHdD1FLFXmx8

In case you don't trust me, please ask the SM tech guy to send you the latest BIOS update, in my case it was "x9dr3p8.523.zip"