The JTAGICE3 enclosure consists of three separate plastic components - top cover, bottom cover, and blue belt - which are snapped together during assembly. To open the unit, simply insert a large flat screwdriver into the openings in the blue belt, apply some inward pressure, and twist gently. Repeat the process on the other snapper holes, and the top cover will pop off.
To close the unit again, simply align the top and bottom covers correctly, and press together firmly.