Without this key, you can still power on/off the server and check sensor data, but you cannot view the screen or mount media remotely. How the Fujitsu iRMC S4 License Key Works
The license data is typically generated in a proprietary XML format. It is encrypted using AES-128 and encoded in base32, usually presented as a sequence of character blocks (e.g., XXXXX-XXXXX-XXXXX-XXXXX-XXXXX). The iRMC firmware validates this signature to ensure it is authentic and matches the server serial number. Installing the iRMC S4 License Key
After purchasing the license, a key is issued via the Fujitsu activation portal.