How to connect an HP All-in-One as an external monitor to a discrete graphics card?

Question

Multimonitor

There is a discrete video card and a monoblock HP ProOne 440 G5, I wanted to use a monoblock as a monitor, but there is no information anywhere, even in the HP documentation. I tried to write to HP support, to which I received an answer

. In general, I did not receive a normal answer, they redirected me to support for business equipment.
Search engines aren't happy either. I saw a similar question, but the problem is not solved there either.

Answer 1

Disassemble, see how the internal monitor is connected. Most likely, there is LVDS, so you will need an adapter.

Answer 2

If there is an HDMI input on board, then no problem - just connect
If not, alas, only if you disassemble and put in another scaler