You shouldn't require any DeviceProperties with the Intel i219-V Ethernet controller. Just the latest version of IntelMausi.kext, which you appear to be using.
You may need to add the 'Built-in' property, but that is all and only if macOS doesn't set your Ethernet controller as built-in automatically. As normally the Intel i219-V Ethernet controller doesn't need a 'fake' device-id.
Just so you know, the Intel i219-V Ethernet controller comes in many variants, so depending on which exact version of the Ethernet controller your motherboard uses the device id will be different.
You adding '70150000' to your OC config.plist is probably the reason why your Ethernet port isn't working. I recommend removing the device-id entry and seeing if that helps.
These are the device-ids for the various i219-** controllers released by Intel.
0x1570 |
Intel I219 V |
0x15B8 |
Intel I219 V2 |
0x15D8 |
Intel I219 V4 |
0x15D6 |
Intel I219 V5 |
0x15BE |
Intel I219 V6 |
0x15BC |
Intel I219 V7 |
0x15E0 |
Intel I219 V8 |
0x15E2 |
Intel I219 V9 |
0x0D4F |
Intel I219 V10 |
0x0D4D |
Intel I219 V11 |
0x0D55 |
Intel I219 V12 |
Not sure what happened to v3, but it is missing from the table.
Using the 70150000 device-id sets your Ethernet controller as 1st version of i219-V, that is not likely to be the case in your Z790 motherboard. It is more likely to be V10, V11 or V12.
These are the device-id's in IntelMausi.kext/Contents/Info.plist (i219-V entries in bold)
0x10EA8086 0x10EB8086 0x10EF8086 0x10F08086 0x15028086 0x15038086 0x153A8086 0x153B8086 0x155A8086 0x15598086 0x15A08086 0x15A18086 0x15A28086 0x15A38086 0x156F8086
0x15708086 0x15B78086
0x15B88086 0x15D78086
0x15D88086 0x15E38086
0x15D68086 0x15BD8086 0x15BE8086 0x15BB8086
0x15BC8086 0x15DF8086
0x15E08086 0x15E18086
0x15E28086 0x15B98086 0x0D4E8086
0x0D4F8086 0x0D4C8086
0x0D4D8086 0x0D538086
0x0D558086 0x15FB8086 0x15FC8086 0x15F98086 0x15FA8086 0x15F48086 0x15F58086 0x1A1E8086 0x1A1F8086 0x1A1C8086 0x1A1D8086 0x550A8086 0x550B8086 0x550C8086 0x550D8086
All the different i219-V** variants are included in the kext. So a device-id entry should not required no matter which variant your motherboard uses.