> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/manifold-5l-and-manifold-5s-ethernet-switch/opening-and-re-closing-the-case/opening-the-case.md).

# Opening the Case

The base back compresses the o-ring, and if the case is not opened properly, the screws may be damaged. The opening procedure is this:

1. Using a 2mm hex wrench (one is provided), loosen each of the 16 flathead screw 1/2 turn.
2. Repeat step 1 until all the screws are loose.
3. Remove the screws the rest of the way.
4. The O-ring is greased. Be sure you place the case back inside-up on a clean surface. Take care not to get grit or hair or other foreign objects on the O-ring.