I need to load the UEFI driver for the 82574L chip on my Supermicro X9SCA MB. The one I downloaded (PROEFI_v13_5.exe) is dated from 2008, says it supports the 82574, but doesn't explicitly say the 82574L. Also, it claims support for UEFI 2.2, 2.1, and 2.0, but does not mention UEFI 2.3.1, which is what I have. Upshot is that the driver loads, but the ethernet chips never show up in the devices list; as if the driver loaded but didn't connect with the LAN hardware. Any guidance I could get from more experienced parties would be great, I'm tired of banging my head against the wall!