> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/xbb020-and-xbb021-manufacturing-description/assembly/enclosure.md).

# Enclosure

1\.    Take the box and attach the rubber grommet to the oval hole on the right. It can be difficult to get it there so you have to push and pry with both force and finesse.

2\.    Make a small hole (type 3-4mm) in the middle of the grommet.

3\.    Screw the cable entry into the threaded hole on the left.

4\.    Screw the assembled mounting plate into the box in the 4 corners (screws are included with the mounting plate/box).

5\.    Thread the micro-USB connector with the cable through the rubber grommet and attach a cable tie anchor on the right side of the inside of the box.

6\.    Approx. 10 cm from the micro-USB connector, attach the cable with a cable tie to the anchor, make a loop with the USB power cable and carefully connect the micro-USB cable to the connector on the BBO (see picture below of finished assembly. NOTE, the picture below is on a WiFi BBO without an Ethernet connector).

  

<figure><img src="/files/KdfmPMU7CgrviDWKfmWF" alt="" width="470"><figcaption></figcaption></figure>

7\.    Carefully thread the Ethernet connector through the rubber grommet, connect this to the Ethernet socket on the BBO (far right next to the micro-USB connector. NOTE, the Ethernet connector is not included in the picture above).


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