The Siemens 6AV2104-2BD06-0BJ0 is SIMATIC WinCC Runtime Advanced Powerpack 128 PowerTags  512 PowerTags V11..V16, a runtime software in the TIA Portal. Here are its details:

License Type: Single License

Supported Versions: V11 to V16 (without version change)

Functionality: Expands the number of PowerTags from 128 to 512

Delivery: License key for download (no software or documentation included)

Product Lifecycle: Discontinued since October 1, 2021 (no longer available)

Compliance: RoHS directive compliant

Country of Origin: Germany

Successor: A newer version is available: 6AV2104-2BD00-0BJ0