Prolific Usbtoserial Comm Port Version 333114 Driver [hot] Page

When using version with a non-certified or older chip (e.g., PL2303HXD), the following occurs:

Plug in your USB-to-Serial cable. Open (Right-click Start Button > Device Manager). Look under: prolific usbtoserial comm port version 333114 driver

None. The number 333114 is a shorthand or filename convention. The actual file version is 3.3.31.14. Some driver packs omit the dots. When using version with a non-certified or older chip (e

Compatible with Windows 7, 8, 8.1, 10, and 11 (32 & 64-bit). Legacy Hardware Support: The number 333114 is a shorthand or filename convention

🚩 If the device still shows a yellow exclamation mark, you may need to disable Memory Integrity in Windows Security or use a "Code 10 Fix" utility tool.

| Alternative | Best for | |-------------|----------| | Prolific v3.8.26.0 (official) | Genuine PL-2303 chips on Windows 10/11 | | FTDI CDM driver | Switching to an FTDI-based adapter | | CH340/341 driver | Budget adapters (different chip, no driver war) | | Prolific v1.8.0 (older) | Windows 2000/XP legacy systems |