Technically, no specific "HK-808 driver" exists for macOS. The HK-808 is a generic USB device that uses a standard chipset (usually Broadcom or Cambridge Silicon Radio). However, you may need a kernel extension or a workaround to force macOS to recognize it.
Apple has significantly tightened its Bluetooth stack. Standard "plug-and-play" behavior for generic USB adapters often requires manual intervention or specific kernel extensions (kexts) like BlueToolFixup to function correctly. Driver Availability: Hk-808 Bluetooth Usb Adapter Driver For Mac
You do not install a third-party driver. You either force macOS to recognize the adapter using a workaround (like modifying system files) or you rely on a specific chipset that Apple already supports unofficially. Technically, no specific "HK-808 driver" exists for macOS
When you plug an HK-808 into a modern Mac, here is what happens: Apple has significantly tightened its Bluetooth stack
Good luck, and may your Bluetooth connections be stable and your dongle recognized.