Windows 11 [portable] - Bcm2045a0 Driver

✅ Device Manager shows “Broadcom Bluetooth 4.0” (not BCM2045A0) ✅ Bluetooth icon in action center ✅ Can pair a phone / mouse / speaker ✅ Survives reboot

: Replace the Wi-Fi/Bluetooth card with an Intel AX200/AX210 (requires M.2 Key E slot). Costs ~$20. Avoid Realtek cards for Win11.

Windows 11 does not natively include a working driver for the BCM2045A0 Bluetooth chip. Microsoft’s generic driver or Windows Update often fails, leaving a yellow exclamation mark. You need the Broadcom Bluetooth 4.0 driver package (circa 2016–2018) or the specific Lenovo/Dell/HP OEM driver . Generic “driver updater” tools will not work. bcm2045a0 driver windows 11

Broadcom Broadcom BCM2045, v.6.1.0.4700, A01 | Driver Details

: Check the Lenovo Support portal for updated Bluetooth drivers specific to your model (e.g., Yoga or IdeaPad series). ✅ Device Manager shows “Broadcom Bluetooth 4

The is a chipset manufactured by Broadcom . It is most commonly found in Broadcom Bluetooth Dongles (USB adapters) and is also integrated into certain laptops (such as older Dell and HP models).

Edit: Added HP sp87895. Credit to u/bluetooth_hates_me for testing on 24H2. Windows 11 does not natively include a working

If you have recently upgraded to Windows 11 or performed a clean install and noticed an "Unknown Device" or a generic Bluetooth radio error in Device Manager, you are not alone. Many users encounter an issue with the hardware ID .

| Symptom | Fix | |--------|------| | Bluetooth works but disconnects after sleep | Disable USB selective suspend in Power Options → Advanced → USB settings | | Code 10 after reboot | Re-apply driver via Have Disk (signature enforcement again) | | Bluetooth mouse lags | Disable “Bluetooth LE” enumeration in Device Manager → Bluetooth LE Enumerator → Disable | | Driver installed but no devices found | Run services.msc → Restart “Bluetooth Support Service” |