Why port forwarding works only for some local devices?

I'm currently troubleshooting my network and one of the things I noticed is forwarding ports on my router (this one: https://www.tp-link.com/en/home-networking/wifi-router/archer-c6/v4/ ) seems to work only if I enter Device IP of my printer, but doesn't work on other devices it the same network. This rule: Results in this: but this one: results in: I don't really know why my second test didn't work. Does target device need to have something enabled to be forwarded to? Does the router care to what kind of device it is forwarding packets? I'd like to understand this topic better before I try re

Question by nabacc001 on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.