Bitcoin mining was originally performed only on desktop or laptops - “one CPU, one vote.” As Bitcoin grew in value, graphics card (GPU) mining was developed as a more efficient method, followed by FPGAs and finally ASIC miners. The very first ASIC miner came in the form of a USB miner in May 2013
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Bitcoin Mining USB Devices On A Large USB Hub. Stock Photo, Picture and Royalty Free Image. Image 26082278.