@Joe-Gill i successfully ran through a pallet of these - 27 - and no issues. this was my process:
boot into BIOS setup.
Click enable UEFI network stack, scroll down to AHCI and click it. hit Apply.
on the left, select secure boot. disable using checkbox - it will ask if you’re sure. hit yes, hit apply. hit exit.
it reboots, hit f12, network boot ipv4
it works
if it doesn’t work for you, make sure your ipv4 UEFI boot settings are setup on your dhcp server (ipxe.efi instead of undionly.kpxe)