Why does this licensed radio not need a Contains FCC ID label for its Bluetooth WiFi module?

The Bluetooth WiFi module was fully evaluated as part of the host radio certification rather than approved by reference. During certification testing for Parts 22, 74, 80, and 90, the Bluetooth/Wi-Fi functionality was installed, powered, and operating in the final product configuration. Compliance was demonstrated with the module in place, indicating that the FCC evaluated the Bluetooth/Wi-Fi transmitter as part of the complete host system. Because the host authorization does not depend on the Bluetooth WiFi module's standalone FCC certification, there is no regulatory requirement to list that FCC ID on the product label. This treatment is consistent with prior certifications for this product architecture.