Without the specific driver, your computer will likely recognize the device as an "Unknown USB Device." The official driver package does three critical things:
Check the official M Mark support page for the "Download Center."
Enables control over print density, cutting options, and high-speed printing modes. How to Download and Install the M Mark M300 Driver Step 1: Preparation
Once your driver is installed, you’ll likely want to use the (often bundled with the driver). This software allows you to: Import Excel data for batch printing.
