USBasp - USB programmer for Atmel AVR controllers - fischl.de
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
Download and install Atmel Corporation ATmega16U2 - driver id 1601098