Troubleshooting Your RoHS 721 Cutting Plotter on Windows 10 Getting an older RoHS 721 (often branded as Jinka or MH-721) to communicate with a modern Windows 10 machine can be a frustrating hurdle for many vinyl hobbyists and small business owners. The core issue usually isn't the hardware itself, but the "bridge" between the plotter and your PC: the USB-to-Serial driver. USCutter Forum The "True USB" Myth
CH340/CH341: Very common in budget models. If your device appears as "USB-SERIAL CH340," you need the CH340 Driver. rohs cutting plotter 721 drivers windows 10
Install driver:
Driver Scape: Provides a dedicated B1-721 Drivers Page with versions specifically for Windows 10 64-bit. Troubleshooting Your RoHS 721 Cutting Plotter on Windows