The channel license can only be activated if the QNAP NAS already has a QVR Pro Gold license.
Additional 1, 4, or 8 channel(s) for QVR Pro
The 1, 4, and 8 channel license can only be activated if the Turbo NAS already has a QVR Pro Gold license.
Supported Models: For the best user experience, we recommend using 64-bit x86 NAS models with at least 4GB RAM
Supported OS: QTS versions 4.3.4.0483 build 20180213 or later ; Container Station versions 1.6.1588 or later ; Note: Container Station must be installed before running QVR Pro
The maximum number of QVR Pro recording channels supported is 128. The actual performance limitation depends on your use case and your camera quality and settings