https://www.cleancss.com/user-manuals/H79/DFBD-B4321
DFBD-B4321 User Manual (Bluetooth USB Adapter) by Delta Electronics
View the User Manual for the Delta Electronics model DFBD-B4321 Bluetooth USB Adapter H79DFBD-B4321. View the PDF file for free. No joining required.
bluetooth usb adapteruser manualdeltaelectronics