: Supports the standard Host Controller Interface (HCI) via USB or UART. Driver Compatibility & Versions
| Symptom | Cause | Solution | | :--- | :--- | :--- | | Device not detected in Win10 | Driver signature enforcement | Use Zadig or Libusb (not recommended for BT) or replace dongle | | Code 10: Device cannot start | Missing or corrupt firmware | Reinstall Broadcom driver v6.5 on Win7 only | | Linux: Bluetooth adapter not found | Missing firmware file | Manually download and place .hcd file | | Pairing fails after driver install | Legacy EDR compatibility | Disable "Bluetooth Collaboration" in power management |
Legacy pairing modes (PIN code vs. Secure Simple Pairing). Fix: Use the Broadcom Bluetooth tray icon to pair, not the Windows Settings app. Set the pairing mode to "Legacy" or "PIN code" if available.