Many third-party websites bundle malware or adware with plotter drivers. Always download from the official source. As of 2025, the primary sources are:
For years, standard computers ran on 32-bit architecture. Most older vinyl cutters, including early Liyu models, were manufactured with internal processors and firmware designed to communicate with 32-bit systems. The drivers on the installation CDs were essentially translators that told the 32-bit Operating System (OS) how to interpret the signals coming from the cutter via the USB or Serial port. Liyu Plotter Driver 64 Bit
Once installed, plug in the plotter. Right-click the Start button > Device Manager . Look under Ports (COM & LPT) . You should see "USB Serial Port (COMx)." Many third-party websites bundle malware or adware with