It was not fast. It was not secure by modern standards. But it was cheap . OEMs slapped this chip into thousands of no-name dongles shipped with Dell Latitude D600s, HP Compaq business desktops, and early PlayStation 3 adapters. The problem was never the hardware. The problem was the handshake .
Broadcom did not play nicely with Microsoft’s generic stack. To get a BCM2035B working, you needed a specific driver: . But here is where the ghost story begins. bcm2035b usb bluetooth driver
If you see a BCM2035B in a drawer, do not throw it away. Frame it. It is a fossil of a time when connecting a mouse required a 34MB driver download, a registry edit, and a prayer. It was not fast