Al is correct; you need to contact HP to get more information on the ports that are populated in your system. RST can show the available ports that the hardware (chipset) supports; whether these ports are actually available/useable depends upon the system's design - and this is something that only HP can answer for their designs.
What Al meant was that, unless you are making use of Intel's RAID or Optane technologies, you do not need the RST package installed and I (and Al, obviously) recommend that you uninstall it. IMHO, HP (and Dell) are doing their customers a disservice installing this package by default. It introduces so many unnecessary complications and sets up customers to potentially lose the contents of their secondary drive with one errant keypress. If you don't absolutely need it, don't install it.
Hope this helps,
...S
