Embedded Engineering : USBasp - USB programmer for Atmel AVR controllers
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Amazon.com: for ATMEL 51 AVR USB ISP ASP Microcontroller Programmer Downloader with Cable + 10Pin to 6Pin Adapter Board for Ender 3 or Ender 3 Pro Geekstory : Electronics
V-USB - A Firmware-Only USB Driver for Atmel AVR Microcontrollers
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USBasp - USB programmer for Atmel AVR controllers - fischl.de
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