Amazon.com: USB AVR Programmer w/ 6-Pin 10-Pin IDC ISP Connector for USBASP : Electronics
USBASP - AVR ISP Programmer (blue) | Open ImpulseOpen Impulse
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
USB ISP Programmer for ATMEL AVR ATMega ATTiny 51 AVR Board ISP - AliExpress
Amazon.com: USBasp Programmer Downloader Bootloader Flashing Kit for 51 AVR USB ISP ASP Microcontroller Compatible with Ender 3 Pro cr10 CR-10 3D Printer : Electronics