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#PL2303 PROLIFIC USB TO SERIAL DRIVER HOW TO#

Unfortunately this decision also renders all earlier adapters inoperative. To solve this intellectual infringement - original Prolific company modified their newest drivers to render the counterfeit adapters unusable. The counterfeit chip use the same Vendor ID (VID_067B) and Product ID (PID_2303) - as the authentic Prolific chips. Main cause of this issue is because the device you own contains a counterfeit "Prolific" chip (China clone).

Even vendors selling their "USB to Serial" adapters are baffled.

"Device driver was not successfully installed"Īvailable forum solutions to this problem are half-baked.

Issue will also may show messages like this: This confirms you need to install correct driver file.) That means correct driver version is not installed.)Īnd if you double-click on it, you will see:

(Notice in above picture, yellow triangle next to "Prolific USB-to-Serial Comm Port (COM X)". Works on 32/64-bit.Īnd it addresses issue of: Prolific PL-2303 Driver Fix (VID_067B&PID_2303)ĭriver issue will show inside your Device Manager like this: In summary, this article is for: Windows XP, Windows 7, Windows 8, Windows 8.1 and Windows 10.

#PL2303 PROLIFIC USB TO SERIAL DRIVER HOW TO#

Purpose of this article is to guide you on how to FIX the "Prolific USB-to-Serial" driver issue with common cheap units.