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tuxgraphics.org: 05101, AvrUsb500 -- an open source Atmel AVR Programmer, stk500 V2 compatible, with USB interface
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Amazon.com: Compatible Atmel AT AVRISP mkII AVR ISP mk2 USB MCU AVR XMEGA In-System Programmer Studio 4/5/6 ISP PDI interface @XYGStudy : Electronics
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