Prolific does not publicly host legacy drivers on their main website. However, the official v3.2.0.0 can be obtained from:
⚠️ Warning: Avoid “driver download” sites that bundle installers. Only trust digitally signed
.exeor.inffiles with Prolific’s certificate.
By late 2021, Prolific had released v3.4.0.0 and v3.5.x drivers, but v3.2.0.0 remained popular because it struck a balance — newer than the very old drivers (which Windows Update might block) but before more aggressive counterfeit blocking in later versions.
Before downloading, you need to know what you have so you don't install a driver that breaks your device.
This is a driver for Prolific PL2303 chipset-based USB-to-RS232 serial adapters.
| Feature | v32.00 (2021) | v1100+ (2022–2024) | |---------|---------------|---------------------| | Supports PL-2303 HX/HXD | ✅ Yes | ❌ No (forced Code 10) | | Supports PL-2303 GC | ❌ No | ✅ Yes | | Supports Windows 11 | Partial (with unsigned driver hack) | Full | | Baud rate (max) | 6 Mbps | 12 Mbps | | Driver signing | SHA-1 (expired) | SHA-256 |
Verdict: If you have an older adapter, do not install v1100. It will brick your device virtually. Version 32.00 is your last safe harbor.
Prolific does not publicly host legacy drivers on their main website. However, the official v3.2.0.0 can be obtained from:
⚠️ Warning: Avoid “driver download” sites that bundle installers. Only trust digitally signed
.exeor.inffiles with Prolific’s certificate. prolific usb to serial comm port version 32 00 download 2021
By late 2021, Prolific had released v3.4.0.0 and v3.5.x drivers, but v3.2.0.0 remained popular because it struck a balance — newer than the very old drivers (which Windows Update might block) but before more aggressive counterfeit blocking in later versions. Prolific does not publicly host legacy drivers on
Before downloading, you need to know what you have so you don't install a driver that breaks your device. By late 2021, Prolific had released v3
This is a driver for Prolific PL2303 chipset-based USB-to-RS232 serial adapters.
| Feature | v32.00 (2021) | v1100+ (2022–2024) | |---------|---------------|---------------------| | Supports PL-2303 HX/HXD | ✅ Yes | ❌ No (forced Code 10) | | Supports PL-2303 GC | ❌ No | ✅ Yes | | Supports Windows 11 | Partial (with unsigned driver hack) | Full | | Baud rate (max) | 6 Mbps | 12 Mbps | | Driver signing | SHA-1 (expired) | SHA-256 |
Verdict: If you have an older adapter, do not install v1100. It will brick your device virtually. Version 32.00 is your last safe harbor.