Thank you for your reply, actually the system is not very underpowered, it has 4 Gigs of RAM, and an old (not very old) Intel Celeron (I didn't buy this one, just won it in a competition). It ran Windows 10 and Ubuntu flawlessly. I don't think I need to go for Kubuntu or Lubuntu, but thanks for...
While I was trying to learn penetration testing / ethical hacking online, some tutorials recommended using Kali Linux in VM on Windows since they taught the courses in Kali. But since I had a (relatively old, low end) laptop to spare, I took the plunge and installed Kali on the machine.
(Mind...