According to official , the DBT-122 Revision C has specific behavior on Windows 7:
The DBT-122 supports 128-bit encryption and Adaptive Frequency-Hopping (AFH) to ensure secure file sharing and device synchronization.
Plug the adapter into an available USB port. Windows 7 should automatically attempt to install the necessary software.
The D-Link DBT-122 is a legacy Bluetooth 2.0 USB adapter designed to bridge the gap between older hardware and modern wireless peripherals. While originally built for Windows XP and 2000, many users still rely on it for Windows 7 systems.
For the , the process depends on your system's bit architecture and the specific revision of your hardware. Official Driver & Compatibility Status
If your system does not automatically recognize the device, follow these steps:
