Furthermore, many U232-P9 devices sold online use "clone" or counterfeit chips. The original chipset manufacturers (like Prolific) have updated their drivers to detect these non-genuine chips and intentionally stop them from working to prevent instability. This results in the infamous "Device Cannot Start (Code 10)" error in Device Manager.
If you have a fake U232-p9, download Prolific v3.3.2.102 (for Windows 8 32-bit) or v3.8.25.0 (for 64-bit). These older drivers still support counterfeit hardware but may be unstable. Disable driver signature enforcement before installing. U232-p9 Driver Download Windows 8
Last updated: October 2025 – Verified for Windows 8.1 Embedded and Pro editions. Furthermore, many U232-P9 devices sold online use "clone"
: Includes full RS-232 modem control signals (TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI) and remote wake-up. How to Install on Windows 8 If you have a fake U232-p9, download Prolific v3
Look on the device itself for a brand name (e.g., Aten, Prolific, FTDI, StarTech, Tripp Lite, or a Chinese generic brand). “U232-p9” is not a standard major-brand model.
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