Prolific USB-to-Serial Bridge Driver Download

9 Ratings

Supported Models

HU-709D Driver

Prolific USB-to-Serial Bridge Driver

USB to Serial Port Driver



Supported Operating Systems

Windows XP, Mac OS

File Name

Versions (1-Dec-2003)

Find Related Drivers

Uploader Notes

Under WinXP, I launched Device Manager, right clicked the USB to serial device that had a yellow exclamation mark, hit 'Update Driver'. Checked 'Install from a specific location', browsed to the extracted files and hit OK. Done.

Uploaded By

Jolly Joffer (DG Member) on 10-Apr-2006

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
HU-709D_Windows_and_more/ 34.1 KB 10 Apr 2006
HU-709D_Windows_and_more/ 9.0 KB 17 Jul 2001
HU-709D_Windows_and_more/ X/PL2303_1.0.8b4.pkg/Contents/PkgInfo 8 bytes 17 Feb 2004
HU-709D_Windows_and_more/ X/PL2303_1.0.8b4.pkg/Contents/Resources/English.lproj/ 291 bytes 17 Feb 2004
HU-709D_Windows_and_more/ X/PL2303_1.0.8b4.pkg/Contents/Resources/ 35.6 KB 17 Feb 2004
HU-709D_Windows_and_more/ X/PL2303_1.0.8b4.pkg/Contents/Resources/PL2303_1.0.8b4.pax 87.0 KB 17 Feb 2004
HU-709D_Windows_and_more/ X/PL2303_1.0.8b4.pkg/Contents/Resources/PL2303_1.0.8b4.sizes 49 bytes 17 Feb 2004
HU-709D_Windows_and_more/ 116.6 KB 10 Apr 2006
HU-709D_Windows_and_more/ 34.3 KB 27 Oct 2003
HU-709D_Windows_and_more/ 2.3 KB 23 May 2001
HU-709D_Windows_and_more/ 26.7 KB 27 Oct 2003
HU-709D_Windows_and_more/ 8.6 KB 25 Feb 2004
HU-709D_Windows_and_more/ 135.2 KB 7 Nov 2001
HU-709D_Windows_and_more/ 43.1 KB 1 Dec 2003

How to Update Prolific USB-to-Serial Bridge Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the Prolific USB-to-Serial Bridge driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Prolific USB-to-Serial Bridge into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for Prolific USB-to-Serial Bridge. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

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

This website is not affiliated with Prolific. All company names/logos are properties of their owners.
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