OMEN X by HP Compact Desktop PC and I don't know how it works or how to set it up

[Myystery]

So a while ago, I was given this used OMEN X by HP Desktop PC - P1000-010 and I have no idea how to use it or how it works, its just been sitting in my house for quite a while now so I thought that I would look into it. When I plug in my normal charging cable for my Lenovo computer the PC's fans start to go crazy and are really loud, almost like it's trying to cool itself except it hasn't been used in a while. I have this other connector that goes with it but I'm unsure as to where it plugs into or what it does for the PC [it has a large code on the bottom 33OW].

I've never used this stuff before so I just wanted to see if there was anyone who could help me.  [Personal Information Removed]

[Prométhée]

hi

You must connect a monitor except error
do not plug in your laptop
you normally have a power outlet to connect

OMEN X by HP p1000-010 Desktop PC Product Specifications

330 W external active PFC Smart AC adapter

1 Power button

4 HDMI out

1 DC power in

or

Docking Station I/O ports

6 dc power

4 hdmi out

User Guide

there is the manual here, but may not be of much help

if I understood correctly can be used for virtual reality

https://www.youtube.com/watch?v=FXzKSZ_SUrI

https://www.youtube.com/watch?v=ftGPVRiHlaw