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By adding this item to cart, you agree and acknowledge the Export Policy and confirm that you are a person in the United States with no intentions to illegally export the device.
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Many older USB-to-Serial adapters use Prolific chipsets (like the PL2303HXA) that reached "End-of-Life" (EOL) status years ago. Prolific's official newer drivers are designed to intentionally disable these older chips on modern Windows versions.
Because version 3.2.0.0 is a legacy file, it is often hosted on community support sites rather than the primary Prolific Technology homepage. prolific+usb+to+serial+comm+port+version+32+00+download+2021
Windows Update may attempt to "correct" your driver by installing the latest (non-functional) version. To prevent this:
Right-click the device under and select Update Driver . Choose > "Let me pick from a list
Consider using tools like the Microsoft Show or Hide Updates troubleshooter to block the specific Prolific update. PL2303 issues (Prolific USB to Serial Drivers) Win 11
: Manually installing and "locking" driver version 3.2.0.0 allows these devices to work again by bypassing the security checks found in newer releases. How to Download and Install (Step-by-Step) Because version 3
: Remove your USB-to-Serial cable from the computer before starting the installation.
Use the feature in Device Manager if the problem recurs.
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