If you are using a desktop PC, plug the dongle into a front-panel USB port or use a USB extension cable to move it away from the metal casing of the computer, which can block signals. Keeping Your Drivers Healthy
Before you download anything, you need to know exactly what hardware is inside your machine. "M-Tech" is the brand, but they use different wireless cards depending on the specific laptop model (e.g., M-Tech M-Bible, M-Work, etc.). mtech bluetooth driver
Bluetooth Drivers - Software & Applications - Spiceworks Community If you are using a desktop PC, plug