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No there really isn't a way to limit it, in most miners there really isn't that option unless you can set parameters within your miner software, little coding maybe but far as NICEHASH its all or nothing I believe. I never seen an option in it to limit it plus if you don't really go full on your not really making anything as far as profits so wouldn't be a point in mining. The cost of electricity VS what you profit is touchy so there would be a lot of math done to figure if it would even benefit you to limit mining. Why would you want to? Just curious....it would be like saying you rather $10 over a free $50 bill. If your concerned with damage that is rare but they do need to run a lot so it does cost the lifespan in some ways, but not so much you would see it die in a month...we are talking some gpus mining for years straight and usually its just the fans that die.

I asked because i wanted to use my computer at the same as it is not high specs one .
Thanks for your answer :)

Got ya, makes perfect sense. Well what you could do is if you have a GPU just run the GPU and not the CPU...just kick on the CPU when your not using it maybe? That is what I did before I built this recent PC....and GPU mining tends to not effect your daily usage as long as its not gaming and GPU extensive software. Totally get you now, that is a good question. That is why they have the checkbox option on your devices, just in case you don't want one mining but no limit on how much power it uses sadly, maybe in the future