USB Bitcoin miners are available to buy, but they don’t really generate any significant profits. They’re a good choice if you just want to fool around with Bitcoin mining and miners like the Antminer S9, S7, S5, Antminer R4, SP20, and 65nm asic bitcoin mining chip ebay philippines are too expensive for you.
You should buy one to learn how mining works, but other than that don’t expect much! If you are serious about making profit then check out better Bitcoin mining hardware. You can always check the profitability of a USB miner using our mining calculator. Don’t Get Confused There is USB Bitcoin mining hardware, which mines bitcoins. There are also Bitcoin hardware wallets like the Ledger Nano S, which store bitcoins.
Both are USB type devices that have completely separate functions! The Sapphire Block Erupters were the first Bitcoin USB miners. It may be a good choice just to see how mining works, but like with most USB miners: do not expect to turn a profit. 15 per month, which is more than a dollar per year!