The M-Tech BT-05 is a USB Bluetooth adapter (dongle) that enables Bluetooth connectivity on desktops or laptops without built-in Bluetooth. This guide covers identifying the device, locating and installing the correct driver for Windows (10/11) and Linux, troubleshooting common issues, and testing the adapter.
Even after installation, things can go wrong. Here are fixes for the most common M-Tech BT-05 errors: driver bluetooth m-tech bt-05
If Windows fails to install it, you need the generic CSR Bluetooth driver. Driver Guide — M-Tech BT-05 Bluetooth Adapter Overview