Sci-usb-2-serial-v1.5.0.1 Exclusive -

Sci-usb-2-serial-v1.5.0.1 Exclusive -

if the driver does not resolve the issue.

The specific you encounter when plugging the device into your PC. How To Install Spd SCI Usb2Serial Drivers Manually (SciU2S) sci-usb-2-serial-v1.5.0.1

Software Review: SCI USB-to-Serial Driver / Utility (v1.5.0.1) Executive Summary Version 1.5.0.1 of the sci-usb-2-serial if the driver does not resolve the issue

Go to Device Manager , right-click the Prolific driver, choose Properties , go to the Power Management tab, and uncheck "Allow the computer to turn off this device to save power." right-click the Prolific driver

Once complete, the yellow exclamation mark should disappear. Your device will now appear as a properly recognized COM port (e.g., "Spreadtrum SCI USB2Serial (COM3)").

sciu2s.inf (and associated system payload files like sciu2s.sys ).