For questions about component-level electronic circuits, tools and equipment.
1: Be nice.
2: Be on-topic (eg: Electronic, not electrical).
3: No commercial stuff, buying, selling or valuations.
4: Be safe.
That is a K72 MOSFET transistor, essentially an electronic switch. It's probably necessary for something but without a datasheet for the board I can only guess. The K2 underline is the date code (2023 February per the datasheet coding). And yes, it is paralleled nicely so you may be OK
Try it out for a while and see if you notice anything odd.
Also some people guessed that this might be in the audio area, so only audio might be affected.
So far, I don't see any issue (audio plays too, though I can't like tell if some frequency is missing or something, I mean, it sounds fine).
What are the chances if I keep using the PC like, this could damage the other (way more expensive) parts or cause a fire?
Those parts are not paralleled. They could be switches so that each rear / front I/O jack can be used as a microphone or speaker, so if youre lucky it could just be the one that lets you configure a speaker output as a microphone input
You can also solder a new one on (if the old one is too ripped up). They are pretty cheap. Even with a new soldering iron it's still much cheaper than possibly a new motherboard. But i don't know whether these are at all that important, so i don't know if it's worth it.
But i don’t know whether these are at all that important, so i don’t know if it’s worth it.
Well, they're not for decoration either. The board is designed for that component to be in place. But, as already mentioned, there's reundancy, so it might not be an immediate problem, or not a problem at all. It might have affect on how long the board lasts, it might be a problem with different components in place, cause stability issues under certain kinds of load and so on.
For OP, if it works, I'd keep just using it. Replacing the component would be the best option, but if you don't have experience on soldering (or know someone who does) I'd skip that. Looks like the pads are at least damaged if not missing altogether and replacing that isn't really trivial job. Not impossible either by any stretch, but not something you'd want to do for your first soldering job.
Cascading failure could, at least in theory, damage more expensive components on the machine, but that's pretty unlikely. And it won't catch on fire because of that.
That was an extra, I wouldn't worry about it.
