The box contains:
Atmel AVR Dragon tool
Internet link to Software (http://www.atmel.com/avrdragon)
There is no CD shipped with the AVR Dragon. The only way of getting the software is by downloading it directly from the Internet.
PC with free USB connector or a USB HUB capable of delivering 500mA
USB Cable
Latest Atmel Studio - minimal requirement 4.12 SP2 ( Link: http://www.atmel.com/avrdragon)
6/10 pin Header Connector (or similar cables to connect the AVR Dragon to the target board)