Bm05ev2 01 Bluetooth Driver 2021 May 2026

Based on common generic dongles from 2020–2022, here are the top candidates:

| Chipset | Driver Source | Windows 10/11 Compatibility | | :--- | :--- | :--- | | Realtek RTL8761B | Realtek official website | Built-in via Windows Update | | Realtek RTL8821CU | Realtek | Needs manual install | | Broadcom BCM20702 | Broadcom / Microsoft | Native in Win10/11 | | Mediatek MT7921 | Mediatek / OEM laptop | Windows Update | | CSR 8510 A10 | Cambridge Silicon Radio | Native in Win8.1/10 | bm05ev2 01 bluetooth driver 2021

If you see VID_0BDA (Realtek) and PID_8771 or A729, your device is a Realtek RTL8761B / RTL8821CE / RTL8723DE class adapter – the “bm05ev2 01” likely refers to a firmware or PCB revision. Based on common generic dongles from 2020–2022, here

After installing the 2021 driver:

Common 2021 driver fixes included:

  • Add vendor control protocol support:
  • Integrate with OS Bluetooth stack:
  • Power management:
  • Implement firmware update support if provided:
  • Test profiles end-to-end (pairing, audio streaming, call audio, metadata).

    • Note: These links were valid in 2021. Some may redirect now. After installing the 2021 driver:

    Realtek does not host public consumer drivers, but Microsoft Update Catalog does.