We issue this warning to all our customers and consumers to avoid confusion and false purchase. Counterfeit IC products show exactly the same outside chip markings but generally are of poor quality and causes Windows driver compatibility issues ( Yellow Mark Error Code 10 in Device Manager).

Please be warned that counterfeit (fake) PL-2303HX (Chip Rev A) USB to Serial Controller ICs using Prolific's trademark logo, brandname, and device drivers, were being sold in the China market. Log-in to our Support webpage to download more files:

Prolific recommends to use PL-2303HXD (HX Rev D) or PL2303TA chip.

Windows XP, 2000, 98 and Windows ME driver technical support is discontinued.

Run PL2303 CheckChipVersion tool program in Windows XP/Vista/7 to check chip version.

Windows 8/8.1/10 are NOT supported in PL-2303HXA and PL-2303X EOL chip versions.

Installer supports silent install (add '/s' parameter when running program) Includes Certification Report, User Manual, Driver Release Notes, CheckChipVersion Tool Installer Language Support: English (default),

Auto-download driver via Windows Update (Windows 7, 8.1, 10) Windows Vista, 7, 8.1 Certified WHQL Driver ( For PL2303 HXD, SA, TA, TB, RA GC, GS, GT, GL, GE, GD, GR versions) Auto-download driver via Windows Update (Windows 11) Windows 11 Certified WHQL Driver ( 21H2 versions) ( For PL2303 HXD, SA, RA GC, GS, GT, GL, GE, GD, GR versions) Windows Driver Installer Setup Program ( Win7 / Win8.1 / Win10 / Win11) Download File: PL2303_Prolific_DriverInstaller_v4.0.1.zip

Gigaware usb to serial driver free