In the world of PC peripherals, few things are as frustrating as a "plug-and-play" device that refuses to simply plug and play. The (often recognized internally as the Broadcom BCM20702A0 chipset ) is a classic example. For millions of users, this tiny USB dongle has been the gateway to wireless freedom—connecting mice, keyboards, headphones, and game controllers to desktop PCs that lack native Bluetooth.
He dug through a drawer of "magic beans"—spare parts and dongles—and found it. A tiny, thumb-sized . He plugged it in, expecting a quick chime of success.
However, the most common search query surrounding this device is not "How to use" but rather —a plea for help from users stranded by Windows driver conflicts, yellow exclamation marks, or feature loss after an update.
The "Unknown Device" transformed. The name vanished, replaced by the proud title: Targus Bluetooth 4.0 Adapter .
Leo put on his headphones. A soft voice whispered, "Connected." He pressed play on a synth-wave track, and the 2012 rig roared to life, its ghost finally laid to rest by the right string of code.
Microsoft Windows does not always read the "Targus" brand name correctly. Instead, it scans the USB hardware ID (VID/PID). The BCM20702A0 chipset has a specific signature that Windows tries to match with a generic Broadcom driver or a native Microsoft one. When that match fails, you need to manually intervene.
The firmware failed to load. Unplug the dongle, go into Device Manager, click View > Show hidden devices . Delete all ghosts of the adapter. Then, shut down your PC (not restart—a full shutdown), unplug the power cord for 30 seconds, reboot, and reinsert the dongle.
Using the Targus Bluetooth Adapter driver BCM20702A0 offers several benefits, including:
If the driver installer isn't working, you can force Windows to use the driver file. Press Windows Key + R , type , and hit Enter. Expand Other devices or Bluetooth and find "BCM20702A0". Right-click on the device and select Update driver . Choose "Browse my computer for drivers" .
With this guide, your Targus adapter will move from a "Code 43 nightmare" to a seamless wireless bridge. If you are still stuck, visit the r/Targus or r/Bluetooth subreddits and link this article—the community continues to keep the BCM20702A0 alive, one driver update at a time.