need documentation that identifies the connections in the back. existing docs has no descriptions

[bob-trying]

Existing documentation is lacking in describing the connections in the back of the tower. The docs that I have show distant pics and no detail and explanation of what that connection is for. I have searched docs and found nothing to be of assistance. I recently had issues with the monitor and this issue had me going back looking at docs for the desktop.... would appreciate any link that could provide this information. Thanks in advance....

[Prométhée]

Hello
your computer may have different configuration as mentioned in the link

https://support.hp.com/us-en/product/hp-envy-phoenix-810-400-desktop-pc-series/7477706/document/c045...

normally you must have this motherboard

•  Motherboard Specifications, Kaili2

• 1 Optical S/PDIF-out port
• 2 LAN
• 3 USB 2.0: 2
• 4 HDMI
• 5 USB 3.0: 2
• 6 DVI
• 7 Audio: center/subwoofer
• 8 Audio: rear speaker out
• 9 Audio: side speaker out
• 10 Audio: Line in
• 11 Audio: Line out
• 12 Audio: Microphone

You can have different connectors on the graphics card, if there is one, but it is not specified here

Must select one of the following options:

• Nvidia GeForce GTX 745 4 GB
• Nvidia GeForce GTX 980 4 GB
• AMD Radeon R9 270 2 GB