Installation unit for two data technology modules type A, suitable for installation in Rapid 80 device installation duct systems and ISS installation columns. Data technology carrier type A is suitable for the following data connection modules: AMP TYCO (without dust protection flap): SL Series 110Connect and SL Series Toolless Brand-Rex: Modules with article number endings JAKS000CR and JAKU002 Nexans: LANmark RJ45 with blue adapter clip, LANmark GG45 with metal clip.