1.Hobby Bitcoin mining can still be fun and even profitable if you have cheap electricity, an efficient bitcoin mining machine, and get the best Bitcoin mining hardware.
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3.Using a Bitcoin USB miner with your computer was once a profitable way to mine bitcoins. Today, however, USB miners don’t generate enough hashing power to mine profitably. If you just want to get a Bitcoin miner USB to learn, a USB eBay is a good cheap Bitcoin miner.
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5.https://www.hobbymining.com/mining-hardware/