Follow the on-screen prompts and restart your computer when finished. Step 4: Manual Device Manager Installation

If the U232-P9 continues to fail, the hardware itself might be a "clone" or simply too old for modern 64-bit architecture security. Modern alternatives like the or adapters using FTDI chipsets generally offer much better native support for Windows 10 and 11. USB-Serial Adaptor - Microsoft Q&A

Many legacy software programs only support COM ports 1 through 4. If Windows assigned your adapter to COM5 or higher, right-click the device in Device Manager, go to Properties > Port Settings > Advanced , and change the COM Port Number to an open lower slot.

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You can find recent Windows 10 compatible drivers directly on the MCT Download Page Alternative Package: Some users have success with the USB-RS232 Windows 10 & 11 Driver provided by third-party industrial suppliers. mct.com.tw 2. Manual Installation Steps

Follow the on-screen prompts to complete the installation wizard.

provide Prolific USB-to-Serial controller drivers that are compatible with Windows 10 64-bit. How to Install on Windows 10 Download and Extract: