Before plugging in the Atmel JTAGICE3 for the first time, be sure to install the USB driver on the host computer. This is done automatically when installing the front-end software provided free by Atmel. See www.atmel.com for further information or to download the latest front-end software.
The JTAGICE3 must be connected to an available USB port on the host computer using the USB cable provided. The JTAGICE3 contains a USB 2.0 compliant controller, and can operate in both full-speed and high-speed modes. For best results, connect the JTAGICE3 directly to a USB 2.0 compliant high-speed hub on the host computer using the cable provided.