AVR Downloader Automatic Speed Governor USBASP USBISP Programmer AVRDude USB Port Support for AVRDude from version 5.2 onwards. Allows you to to read or write the microcontroller EEPROM, firmware, fuse bits and lock bits Support for Linux, Mac OS X and Windows (will work on vista). 5 KB/sec maximum write speed. Software controlled SCK option to support targets with low clock speed (&lt; 1.5MHz) 10 pin ISP interface These programmers are a perfect companion to the Protostack 28 pin AVR Development Board or the Protostack ATMEGA8 Development Kit.