I had said:
usually find DisplayPort, DVI, and HDMI on there.
And indeed you have all 3.
Understanding a little bit of history with this will make it a lot easier.
VGA was invented in 1987 and is analog video. It's a very old technology that's slowly dying after far too long.
DVI was invented in 1999 and is digital video. One special thing about DVI was it originally had a few extra pins so it used to be able to do DVI & VGA over the same port.
When Digital HDTVs were made, the TV companies had to make a new connector to replace the analog video ones. So they took DVI and added audio to it.
HDMI is literally DVI + Audio with a different shape connector. So you can buy a cable with both ends on it something like this:
https://www.amazon.com/dp/B014I8UU2W
These cables work any which way - you can use a DVI computer with an HDMI monitor. You can use an HDMI computer with a DVI monitor. The only catch is you don't have audio.
HDMI is patented by the TV companies, so anyone who uses it has to pay a small fee to them.
The monitor companies were unhappy about this, so they made a knockoff version called DisplayPort.
DisplayPort can be converted to DVI, VGA, or HDMI - but this conversion requires a chip. Because they have a chip in it - these cables only work one way.
For example if you have a cable like this for example:
Some cables will with a Displayport computer and HDMI monitor.
Some cables will work with a Displayport monitor and HDMI computer.
These cables can look the same, but they have different chips. One has an HDMI to Displayport chip. One has a DisplayPort to HDMI chip.
