Always power up the Atmel AVR Dragon first before connecting to or powering up the target
AVR Dragon needs to sense the target voltage at pin 2 on the SPI(ISP) header or pin 4 on the JTAG header
This also applies when using the High Voltage interface
The High Voltage interface is set to 5V. Make sure the target board are running at 5V before using this interface off board.
VCC header is set to 5V, and can source max. 300mA
If AVR Dragon is used for programming/debugging targets on the Atmel STK500, the RESET jumper on the STK500 must be removed