I got my hand on quite similar hardware.
HP prodesk 600 G5 - with the same hardware setup. But this one got dual nvme slots.
I managed to install the 1.04 with the latest pat file for the 918+ (got a original 918+ aswell)
After adding the latest extra.lmza for @IG-88 I got it started. But with only the nvme no install is possible.
After adding a sata HDD I could install the latest pat.
After restart HDD is found but could not locate the nvme. Also not by SSH.
Seems that the chipset is not recognised.
What kind of version where you trying to install?
