IOGEAR PL2303 COM Port Driver Download

39 Ratings (see all reviews)

Supported Models

AU9720 USB to UART Driver

PL2303 COM Port Driver

iDEN USB Modem Driver



Alcor Micro


Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95

File Name (4.9 MB)

Versions (2005-05-03) via .inf
1.00.01 (2004-12-01) via .inf

Find Related Drivers

Uploaded By

toHands (DG Member) on 22-Feb-2006

Most Helpful Reviews

4 of 5 people found the following review helpful:
Wesley Bielinski
Tested on Windows Vista
14 May 2007

Installation:  out of 5
Stability:  out of 5
Compatibility: 1 out of 5
"Not recognized by Vista"
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See all IOGEAR PL2303 COM Port ratings and reviews

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
0x0404.ini 3.3 KB 26 Feb 2003
0x0409.ini 4.6 KB 25 Feb 2003
0x0804.ini 3.3 KB 25 Feb 2003
1028.mst 19.5 KB 18 Oct 2005
1033.mst 3.6 KB 18 Oct 2005
2052.mst 20.5 KB 18 Oct 2005
ISScript8.Msi 713.2 KB 9 Apr 2003
Setup.ini 1.4 KB 18 Oct 2005 244.1 KB 5 Mar 2003
USB Cellphone Data Transmit Controller.msi 2.2 MB 18 Oct 2005
Windows/inf/CDCIDEN.INF 1.5 KB 11 Oct 2005
Windows/inf/MDMIDEN.INF 23.8 KB 11 Oct 2005
Windows/inf/ausbser.inf 3.1 KB 3 Nov 2005
Windows/system/WDMMDMLD.VXD 7.8 KB 11 Oct 2005
Windows/system32/drivers/CCPORT.SYS 41.5 KB 11 Oct 2005
Windows/system32/drivers/USBSER.SYS 22.3 KB 11 Oct 2005
Windows/system32/drivers/softctrl.sys 9.4 KB 20 Oct 2005
instmsia.exe 1.7 MB 11 Mar 2002
instmsiw.exe 1.8 MB 10 Mar 2002
setup.exe 225.3 KB 18 Oct 2005

How to Update PL2303 COM Port Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the PL2303 COM 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 PL2303 COM 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 Driver Update Utility for PL2303 COM Port. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the IOGEAR website. Most major device manufacturers update their drivers regularly.

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 IOGEAR. All company names/logos are properties of their owners.
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