Below are the only two safe sources for the BU-353S4 driver on Windows 11.
Since the internal chip is a Prolific PL-2303, you can download the specific PL-2303 Driver Installer from Prolific's official website or a trusted driver archive.
Why? Because the chip inside the BU-353S4 (which converts USB to old-school serial data) was blacklisted by Microsoft in 2020 due to counterfeit chips flooding the market. Windows 11 refuses to load the old v3.3.2 driver out of the box.
: Locate the "Windows USB Driver for Windows 11" (released around February 2022).
For enterprise deployment, IT administrators should pre-stage the Prolific PL-2303 (Legacy) driver (version 3.3.x) before distributing the devices to end-users. This prevents the "Code 10" conflict caused by Windows 11's aggressive driver updating.
Below are the only two safe sources for the BU-353S4 driver on Windows 11.
Since the internal chip is a Prolific PL-2303, you can download the specific PL-2303 Driver Installer from Prolific's official website or a trusted driver archive.
Why? Because the chip inside the BU-353S4 (which converts USB to old-school serial data) was blacklisted by Microsoft in 2020 due to counterfeit chips flooding the market. Windows 11 refuses to load the old v3.3.2 driver out of the box.
: Locate the "Windows USB Driver for Windows 11" (released around February 2022).
For enterprise deployment, IT administrators should pre-stage the Prolific PL-2303 (Legacy) driver (version 3.3.x) before distributing the devices to end-users. This prevents the "Code 10" conflict caused by Windows 11's aggressive driver updating.
