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

Download Windows 10 Manager 3.8.1