Many M-Tech adapters use the CSR (Cambridge Silicon Radio) chipset. You can search for "CSR Harmony Wireless Software Stack." This software provides the necessary drivers and a management interface for older Windows versions. Official M-Tech Support: Visit the official M-Tech Accessories
This is tricky. MTech dongles are designed for Windows. Newer macOS versions (Catalina and newer) have removed support for many third-party Bluetooth dongles. Unless you find a specific open-source kext, assume it will not work.
To fix these issues, you need a dedicated designed for your specific hardware ID.