HP EliteDesk 705 G2 MINI
What I want you to do is to schedule a capture / deploy to one of these systems. BUT before you schedule the task make sure you click on the debug check box then schedule the task.
PXE boot the target computer, after a few enter key presses you will be dropped to a linux command prompt on the target computer.
I want you to post the output of the following commands
ip addr show
lspci -nnI can’t remember off the top of my head.
Can you boot one of these units from a Ubuntu live disk and see if it can recognize & use the NIC? If so, there is hope.