Prolific USB-to-Serial Comm Port Driver Download

Prolific Drivers

The USB-to-Serial Comm Port is a USB device manufactured by Prolific. This driver can help resolve issues like USB device not recognized, "Disk Not Formatted" errors, or if your device randomly ejects or stops working. This driver - "" - has been downloaded 975 times and is rated 5 out of 5 stars based on 21 reviews. Our users report success installing this driver update on PCs running Windows XP. The total disk space used for this update is 264.8 KB.

21 Ratings (see all reviews)

Supported Models


Prolific USB-to-Serial Comm Port

USB to Serial Port



Supported Operating Systems

Windows XP, Windows 2000, Windows NT4, Windows 98SE, Windows 98, Windows 95, Mac OS

File Name

Versions (2001-03-29) via .inf (2002-04-09) via .inf

Additional Notes

USB to Serial converter cable.

Uploaded By

codepriest (DG Member) on 18-Mar-2004

Ratings & Reviews

See all Prolific USB-to-Serial Comm Port ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
SERWPL.INF 2.6 KB 29 Mar 2001
Win98_ME/SERSPL.INF 2.3 KB 23 May 2001
Win98_ME/SER9PL.sys 27.3 KB 14 Aug 2001
Win98_ME/SERSPL.VXD 26.7 KB 14 Aug 2001
readme.txt 1.1 KB 17 Aug 2001
WIN XP/ser2pl.inf 1.9 KB 9 Apr 2002
WIN XP/DrvRemover.exe 151.8 KB 22 Nov 2003
WIN XP/riverLanguageMap.xml 5.2 KB 30 Apr 2002
WIN XP/ser2pl.sys 39.6 KB 9 Apr 2002
WIN XP/id.txt 17 bytes 4 Aug 2000
WIN XP/ 7.1 KB 30 Apr 2002
Win2K/ser2pl.sys 45.9 KB 29 Mar 2001
DRemover98_2K.exe 135.4 KB 22 Nov 2003
Mac/PL2303_Palm_0529_01.sit 7.5 KB 15 Jun 2001
2303Manual.doc 82.4 KB 18 Nov 2003

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

Step 1 - Download Your Driver

To get the Prolific USB-to-Serial Comm Port 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 Comm Port 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 Prolific Driver Update Utility. 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 11, 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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