The Atmel AVR ONE! kit contains these items:
AVR ONE! unit with probe
USB cable (1.8m, high-speed)
EU and US mains power cables
Power supply
AVR ONE! test adapter with 10-pin cable attached
Stand-off adapters (10-pin 100-mil, 6-pin 100-mil, 10-pin 50-mil, 6-pin 50-mil)
38-pin MICTOR connector samples
10-pin squid cable
Atmel AVR Technical Library DVD
Getting Started Guide