Hello
I understand that you’re having trouble with the Wake On LAN (WOL) feature on your Surface Pro 9. Here are some steps you can try to resolve this issue:
Verify the Adapter: Ensure that the Ethernet adapter you’re using supports WOL. Both the Surface USB 3.0 Gigabit Ethernet Adapter and the Surface USB-C to Ethernet and USB 3.0 Adapter support WOL.
Enable WOL in UEFI: You’ve mentioned that you enabled WOL through SurfaceUEFI_Configurator but can’t find “Wake On Lan” in UEFI. Please note that WOL works by default for Surface devices in Modern Standby mode running Windows 10 version 1607 or later.
Check Network Settings: Ensure that ‘Wake on Magic Packet’ is enabled and ‘Green Ethernet’ is disabled in the Advanced tab of the Surface Ethernet Adapter properties.