: The Microsoft stack often lacks Low Energy (BLE) support and may cause random disconnects with BT 4.0 devices.
The BCM2045A0 is not a standalone chip. It is a Bluetooth radio chip manufactured by Broadcom. However, on most modern laptops and desktops, this chip is rarely the primary Bluetooth adapter. Instead, it is almost always a —typically part of a Wi-Fi/Bluetooth combo card (like those from Dell, HP, or Lenovo) or, more commonly, embedded inside a separate USB dongle (often for a wireless mouse, keyboard, or game controller). bcm2045a0 driver windows 11