@FlorianLenz , I used your steps from this and the other forum post. It seems to work on my “HP USB-C Dock G5,” but not on my “HP USB-C to RJ45 Adapter G2.”
Which is weird, because the G2 adapter has PXE boot and MAPT compatibility.

When i boot with my G2 adapter its showing the following:

Start PXE over IPv4
Station IP address is (ip)

server IP address is (ip)
NBP filename is ipxe.efi
NBP filesize is 1164288 Bytes
Downloading NBP file...

NBP file downloaded successfully.
iPXE initialising devices...
autoexec.ipxe... Not found (https://ipxe.org/2d12618e)

iPXE 1.21.1+ (g9486)
Features: DNS FTP HTTP HTTPS iSCSI NFS TFTP VLAN SRP AoE EFI Menu
Configuring (net0 (0C:37:96.....)) . . .

From there, it just gets stuck for a bit, then the laptop shuts off and boots back to the original OS.
Do you have any idea how to resolve this?