Because this is a legacy driver, you won't find it on the modern Prolific website. You must download it from trusted third-party archives or hardware support sites like Miklor or Plugable . Cables & Drivers - Prolific & FTDI - Miklor
: Specifically fixes the "Code 10" error (Device cannot start) and "Phased Out" messages often encountered in Windows 7, 8, 10, and 11 when using modern drivers with unauthorized or older chips. Stability Improvements Eliminates Blue Screen of Death (BSOD) issues during continuous data transfer testing.