Atmel-ICE or JTAGICE3 AVR adapter from 0x1B on Tindie
Atmel Jtagice3 Driver - westerntherapy
JTAGICE3 Introduction
JTAGICE3
The JTAGICE3 Debugger
Atmel Launches JTAGICE3 In-circuit Debugger and Programmer - ATJTAGICE3
Atmel-ICE or JTAGICE3 AVR adapter from 0x1B on Tindie
JTAGICE3
JTAGICE3 Datasheet(PDF) - ATMEL Corporation, Programming and on-chip debugging of all Atmel AVR 32-bit Microcontrollers on both JTAG and aWire interfaces