Plantronics DSP Series Utility Download (Official)

18 Ratings (see all reviews)

Supported Models

DSP Series

Plantronics USB Audio Adapter

Plantronics USB Bulk Driver



Supported Operating Systems

Not Applicable

File Name

Versions (2001-11-27) via .inf
(1999-12-15) via .inf (2001-11-26) via .inf

Additional Notes

DSP Series


You should refer to the Windows Installation guide that came with your headset.

Installing the PerSono software will also install this driver on your system, ready for headset installation.

1. Save the pers-drv_01_03.exe file on your computer.

2. Run the self extracting file

3. During installation of the headset, you will be prompted for the required driver or .inf files. Enter the path for extracted files. Once the INF file is identified by the computer Windows will then prompt for the necessary Plantronics Driver.

4) Any Plantronics authored files required for headset installation are included in this archive. Any other file required will need to come from the installed operating system supplied files.


Uploaded By

Manivannan (DG Staff Member) on 21-Aug-2007

Most Helpful Reviews

4 of 5 people found the following review helpful:
Tested on Windows XP x64
15 Jan 2008

Installation: 3 out of 5
Stability: 3 out of 5
Compatibility: 3 out of 5
"Works on my DSP 500 Headset fine"
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Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
IHS9x.dll 49.2 KB 9 Oct 2002
IHSNT.dll 49.2 KB 9 Oct 2002
Readme.txt 2.2 KB 9 Jan 2003
UacFlt.sys 21.3 KB 3 May 2002
UsbPlant.inf 2.1 KB 9 Oct 2002
UsbPlant.sys 10.8 KB 9 Oct 2002
equcof.dll 81.9 KB 21 Aug 2001
plteq.CAT 8.0 KB 4 Oct 2002
plteq.inf 4.5 KB 15 Mar 2002
plteq98.inf 4.5 KB 9 Oct 2002
uacb.dll 45.1 KB 11 Nov 2001

How to Update DSP Series Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the DSP Series 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 Plantronics DSP Series 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 Plantronics Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Plantronics 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 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 Plantronics. All company names/logos are properties of their owners.
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