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read about it a bit, please.
https://shop.bitmain.com/antminer_l3_litecoin_asic_scrypt_miner.htm

It is a physical device, miner. You plug it in and mine yourself. No rig required, it's already "plug'n'mine" device
but too noisy to keep it at home

I think if we make mining ourself it would be good for us because it's too costly with low earning.
By investing $300 we can make easily $600-$800