Step 1

As shown in the figure below, install the heat sink on the corresponding position of the RDK X3 in advance, and attach the black plastic spacer on the back of the screw hole near the Micro USB port (as shown in the picture). Then align the Raspberry Pi with the holes and fix it on the bottom case with silver screws, and install the side panels and lock them via screws.

* Please note that the larger screw holes of the side panels should face outward.

Step 2

After connecting the fan, directly insert the cover down and close, then lock the screws.