Ah, OK.
4 USB-C ports. All support USB 3.1 and ThunderBolt 3
And, as you can see, no magsafe connector, so the power adapter simply attaches to a USB-C port, primary for that is the left side, nearest the back.
If you don't need the charger connected at the moment, that back port can be used for any USB or Thunderbolt 3 connection. As already noted, the Mac doesn't care which devices you plug into a USB-C/Thunderbolt port.
You will likely need to create a new Linux boot drive (if you need to continue to boot from Linux), but if yours has been kept updated (over the "20 years"), it may work with no issues on your intel MBPro. Try it out!