I might do a video or put this in its own. We got the 10Gbase-T Flex IO V2 module this week, and I thought, "Why not put it in the HP Elite Mini 800 G9 for that review?"
That unleashed a saga.
We put it in the HP Elite Mini 800 G9. Powered it on, and it did not accept RDP connections. Something was amiss so we hooked it up to a monitor. When we installed the 10Gbase-T Flex IO module, it booted and we got stuck at Secure Boot.
"A device added is signed with the Microsoft UEFI CA and can't be used. System administrator must re-enable Microsoft UEFI CA key to boot with this device."
We tried going into the BIOS and it has an Administrator password.
We found out that HP no longer has the clear BIOS password jumper as it did in the EliteDesk G3/G4. Here is the G3 review.
While doing that, we found that HP has decided to steal that article's cover image for its support videos (>10 of them).

It seems like if you do not have or forget your BIOS Admin password for the system setup, your option is to basically get a new motherboard at this point.
So it was physically installed in the 800 G9, but it did not work because the used unit's BIOS configuration was locked.
I then popped it in the HP Elite Mini 600 G9 and it fired right up.
So, there is now a 2nd NIC that is 10GbE available for these.
That unleashed a saga.
We put it in the HP Elite Mini 800 G9. Powered it on, and it did not accept RDP connections. Something was amiss so we hooked it up to a monitor. When we installed the 10Gbase-T Flex IO module, it booted and we got stuck at Secure Boot.
"A device added is signed with the Microsoft UEFI CA and can't be used. System administrator must re-enable Microsoft UEFI CA key to boot with this device."
We tried going into the BIOS and it has an Administrator password.
We found out that HP no longer has the clear BIOS password jumper as it did in the EliteDesk G3/G4. Here is the G3 review.
While doing that, we found that HP has decided to steal that article's cover image for its support videos (>10 of them).

It seems like if you do not have or forget your BIOS Admin password for the system setup, your option is to basically get a new motherboard at this point.
So it was physically installed in the 800 G9, but it did not work because the used unit's BIOS configuration was locked.
I then popped it in the HP Elite Mini 600 G9 and it fired right up.
So, there is now a 2nd NIC that is 10GbE available for these.