Quatech ESU2-100 Driver Download (Official)

Download the latest version of the ESU2-100 driver for your computer's operating system. This driver - "usb720.zip" - has been downloaded 55 times and is rated 5 out of 5 stars based on 11 reviews. It is compatible with PCs running Windows Vista and Windows XP, among other operating systems. The total disk space used for this update is 134.7 KB.

11 Ratings

Supported Models


DSU-100 Dual RS-232 Serial Ports

DSU-200/300 Dual RS-422/485 Serial Ports

DSU2-100 Dual RS-232 Serial Ports

DSU2-400 Dual RS-232/422/485 Serial Ports

ESU-100 Eight RS-232 Serial Ports 1-4

ESU-100 Eight RS-232 Serial Ports 5-8

ESU-200/300 Eight RS-422/485 Serial Ports 1-4



Supported Operating Systems

Windows Vista, Windows XP, Windows 2000

File Name


7.207.20 (2007-03-05) via .inf

Additional Notes


USB Serial Adapters

Driver File

Uploaded By

Karthikkumar (DG Staff Member) on 11-Dec-2008

How to Update ESU2-100 Device Drivers

Step 1 - Download Your Driver

To get the ESU2-100 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 Quatech ESU2-100 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 Quatech ESU2-100. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

After you get your new driver, you need to put it on your computer. On Windows, there's a tool called Device Manager that helps with this. It shows you all the parts of your computer and the drivers they use. To finish setting up the new driver, you'll probably need to turn your computer off and on again.

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.

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
QTUSBBX2.INF 9.4 KB 5 Mar 2007
QTUSBPT2.INF 4.4 KB 5 Mar 2007
cocpyinf.dll 22.0 KB 16 Apr 2003
history.txt 19.3 KB 5 Mar 2007
qtucombx.sys 103.3 KB 5 Mar 2007
qtucomco.dll 15.4 KB 5 Mar 2007
qtucompp.dll 43.5 KB 25 Jan 2007
qtucompt.sys 57.9 KB 5 Mar 2007
qtusbbx2.cat 15.0 KB 12 Mar 2007
qtusbpt2.cat 12.4 KB 12 Mar 2007
qtwdmlib.sys 17.9 KB 23 May 2005
readme.txt 10.4 KB 24 Aug 2006
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