Since 2018, 2CRSi is accumulating experience in designing servers for immersion. In what follows we would like to share what we have learned during this period. The presentation will be divided in 4 main chapters: - Material compatibility: here we will speak about the interactivity between different components and the immersion liquid. What works and what should be avoided. - Mechanical: this chapter in focused on the design features that should be considered when creating a server for immersion. - Electrical: in this chapter we will cover some aspects related to electrical components interaction with the immersion liquid - Software: mostly related to PSU’s software adaptation.