readme.txt Driver File Contents (

Release Note: PL2303 Mac OS X driver v1.0.9 build 3, Prolific Edition
    . MacOS 10.0+
    . USB host controller
    . Device using PL-2303H/X controller

Supported device ID:

Installer file name:

Changes from v1.0.9 build 1:
. Installation destination limited to root volume only.
. Unused file ProlificUSBSerial.kext/Contents/pbdevelopment.plist has been removed.
. Remove unused symbolic information.
. Correct version information saw in 'System Profiler' utility.

Changes from v1.0.8:
. Supports two of our 2303 product with different driver packages work together.
. Prevent warning message appeared while driver loading at first time after installation.


Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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