The reason is simple: macOS lacks the kext for CSR chips. Without a third-party driver, the HK-808 is an expensive paperweight.
Searching for the HK-808 Bluetooth USB adapter driver for Mac? Stop. Read this complete guide to learn why no driver exists, how to force macOS to recognize it, and which adapters actually work. Hk-808 Bluetooth Usb Adapter Driver For Mac
HK-808 Bluetooth USB adapter is a legacy device designed primarily to add wireless connectivity to computers that lack built-in Bluetooth hardware. While it was widely distributed with driver CDs for older Windows and Mac versions, its modern compatibility on macOS is highly limited by current security architectures and driver signing requirements. Hardware Specifications and Compatibility The typically features a Bluetooth 2.0 + EDR specification . The reason is simple: macOS lacks the kext for CSR chips
In these situations, a generic CSR driver or a compatibility kext may help. While it was widely distributed with driver CDs