Amazon.com: Geekstory for ATMEL 51 AVR USB ISP ASP Microcontroller Programmer Downloader with Cable + 10Pin to 6Pin Adapter Board for Ender 3 or Ender 3 Pro : Electronics
USBasp: AVR Programmer Based On ATmega8 | Hackaday
USB ISP USBASP Programmer for ATMEL,51 AVR Programmer M80 A2TM | eBay
Amazon.com: KeeYees 2pcs Downloader Programmer for USBASP for ISP with Cable and 10Pin to 6Pin Adapter Board for 51 for AVR Series Microcontroller : Electronics