Heat sink pasting instructions: The heat sink comes with adhesive backing, which needs to be torn off when used Precise hole position, easy installation: separate acrylic shell installation<br><br>Colour:Transparent Material:Acrylic note:Development board not included Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use<br><br>Package Contents: 1 * Banana Pi OpenWrtOne Case kit(Without Banana Pi OpenWrt One )<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.