Bt-bu1 - Driver

VID_0A5C = Broadcom. Search for that, and the bt-bu1 driver mystery is solved. Frequently Asked Questions (FAQ) Q: Is the bt-bu1 driver a virus? A: No. It is a legitimate Microsoft placeholder name for unrecognized Broadcom Bluetooth hardware.

If you’re still stuck after following this guide, check your motherboard’s support forum or consider replacing the USB Bluetooth dongle – a $10 adapter might be a practical solution if the onboard chip has failed. bt-bu1 driver

A: Windows 11 uses inbox Broadcom drivers. Just run Windows Update – the bt-bu1 driver will auto-resolve on most modern builds. Last updated: October 2025. For the latest driver versions, check your motherboard manufacturer’s support page under “Bluetooth” or “Wireless.” VID_0A5C = Broadcom

The term is not a standard product name like "Realtek Audio" or "Intel Network Adapter." Instead, it refers to a Bluetooth USB adapter interface or a firmware loader for a Broadcom Bluetooth chipset (often the BCM20702 or BCM2070 series). The "BU1" designation typically points to a USB\VID_0A5C&PID_21E8 hardware ID. A: Windows 11 uses inbox Broadcom drivers