Atmel Studio

I Have Connected My Tool Through a USB Hub, and Now I Get Error Messages and Inconsistent Results While Programming and Debugging

Tools and devices may be connected directly to a USB port on your debugging PC. If this is not an option, you may reduce/eliminate problems by:

Note: The AVR Dragon may connect through a powered USB hub because the power supply on the Dragon can be too weak if the motherboard does not provide enough power. The hub might be of too low quality if the Dragon times out or freezes.