Rohs 721 Cutting Plotter Driver Pc < 2025-2027 >

You will need to temporarily restart Windows in "Advanced Startup" mode and select the option to Disable Driver Signature Enforcement . Once disabled, reinstall the driver following the steps in Step 2. Summary Checklist for a Flawless Setup Requirement Correct Setting / Action Driver Type CH340 Serial-to-USB or FTDI VCP PC Port Type USB 2.0 (Black/Grey port preferred) Software Model Selection Refine MH721 / Rohs 721 Connection Protocol COM / Serial (Match Device Manager number) Flow Control Hardware / RTS-CTS

You will likely see an item with a yellow warning triangle labeled USB2.0-Serial , CH340 , or FT232R USB UART . If it says , you need the WCH CH340 driver. Rohs 721 Cutting Plotter Driver Pc