Scroll down and expand the or Universal Serial Bus controllers section.

If you are still hitting roadblocks getting your cable online, let me know:

Look for an item with a yellow warning triangle (often called USB Serial Port , Prolific USB-to-Serial , or Unknown Device ). Right-click the problematic device and select . Navigate to the Details tab. Click the Property dropdown menu and select Hardware Ids .

| Chipset Identified | Recommended Driver Source | Notes for Windows 10/11 | | :--- | :--- | :--- | | | Prolific Official Website (or Windows Update) | CRITICAL: If you get a "Code 10" error, the chip is likely a counterfeit revision. You must install the older driver version 3.3.2.105 to force compatibility. Newer drivers intentionally brick fake chips. | | WCH (CH340) | WCH Official Website (wch.cn) or "Sparkfun CH340 Drivers" | Generally plug-and-play on Windows 10+, but manual installation is sometimes required. Highly stable. | | Silicon Labs (CP210x) | Silicon Labs Official Website (sILabs.com) | Very reliable. Use the "CP210x Universal Windows Driver." | | FTDI | FTDIChip Official Website | Usually auto-detected. Most stable for critical infrastructure. |

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Windows often blocks older Prolific chips. You may need to manually select an older driver version (e.g., version 3.2.0.0 from 2008) in Device Manager using "Browse my computer for drivers" > "Let me pick from a list".

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