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
Tell me or if you need the driver download link . XXXLOAD: Your Blog
Follow the on-screen prompts and click once completed.
Always plug the adapter into the exact same USB port every time, or repeat the "Let me pick from a list" step for the new USB port. Data Corruption / Loopback Failure u232 p9 driver windows 10
Use the (last working legacy driver) – not from Prolific’s current site. Search: PL2303_332_105_20090401.zip (widely mirrored on driver repositories).
If you see Error 10 after installing the latest Prolific driver, buy an FTDI-based USB-to-serial adapter. They cost $10–15 and save hours of frustration.
You need to download the specifically designed for Windows 10 compatibility. If the U232-P9 continues to fail, the hardware
To get your serial communication working, follow these installation steps in order. Step 1: Download the Correct Driver
Your chip is or an old, unsupported version .
The U232-P9 is a common model name for USB to RS-232 (DB9) serial adapters. Depending on your specific brand (like Belkin or generic manufacturers), it likely uses one of two chipsets: XXXLOAD: Your Blog Follow the on-screen prompts and
The is a legacy USB-to-Serial (RS232) adapter primarily manufactured by Magic Control Technology (MCT). Getting this device to work on Windows 10 is often challenging because official support largely ended with Windows 7 and 8. Driver Compatibility Overview
You can often find the U232_10.2 or U232-P9 driver package on support sites like Daktronics . 2. For Prolific Chipsets (PL2303 Series)
: 4.2/5
After reboot, open Device Manager again. Your U232-P9 should now appear under "Ports (COM & LPT)" as "Prolific USB-to-Serial Comm Port (COMx)" without any yellow triangle. Double-check its properties; the Driver version should be 3.3.2.102 .