To install Plex Media Server: Double-click the Applications icon on the NAS control panel desktop. Find the Plex Media Server entry in the app store. Click the Install button in the Plex Media Server entry, which will begin the installation. Once installation completes, continue with the information below to enable Plex Media Server to run.How do I install Ubuntu Server?
Installing Ubuntu Server Select a setup language. Select a keyboard layout if necessary. Proceed to the next page. Select Install Ubuntu and press ↵ Enter. Skip the network configuration page. Enter any proxy details if necessary. Open the next page. Confirm the mirror settings. Select the disk on which you want to install Ubuntu Server.