Quatech USB-to-Serial Driver Set for Windows readme file

(Please refer to the HISTORY.TXT file for change history.)

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Readme Contents
  Section 1:  Driver Overview
  Section 2:  Devices Supported by Driver Set
  Section 3:  New Hardware Installation
  Section 4:  Updating drivers on Windows 2000/XP for an Existing Hardware Installation
  Section 5:  Files Includes with this Driver Set
  Section 6:  Release Notes

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[SECTION 1: Driver Overview]

This readme file contains information for the Quatech USB-to-Serial Driver Set.
For full information on using a Quatech USB-to-Serial product, please see
the User's Manual included with the product or download the PDF version of
the manual from our website:

      http://www.quatech.com/
      

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[SECTION 2: Devices Supported]

USB 2.0 compatible devices:
   (Supported on Windows 2000/XP/Vista/7)
   
   Model          Supported revisions      Description
   -----          -------------------      -----------
   SSU2-100              all               Single-channel USB to RS-232
   DSU2-100              all               Two-channel USB to RS-232
   DSU2-400              all               Two-channel USB to RS-232/422/485
   QSU2-100              all               Four-channel USB to RS-232
   QSU2-400              all               Four-channel USB to RS-232/422/485
   ESU2-100              all               Eight-channel USB to RS-232
   ESU2-400              all               Eight-channel USB to RS-232/422/485


USB 1.1 compatible devices manufactured since March 2003:
   (Supported on Windows 2000/XP)

   Model          Supported revisions      Description
   -----          -------------------      -----------
   SSU-100          C3 and later           Single-channel USB to RS-232
   DSU-100          F3 and later           Two-channel USB to RS-232
   DSU-200/300      F3 and later           Two-channel USB to RS-422/485
   QSU-100          F3 and later           Four-channel USB to RS-232
   QSU-200/300      F3 and later           Four-channel USB to RS-422/485
   ESU-100          E2 and later           Eight-channel USB to RS-232
   ESU-200/300      E2 and later           Eight-channel USB to RS-422/485
   HSU-100          E2 and later           Sixteen-channel USB to RS-232
   HSU-200/300      E2 and later           Sixteen-channel USB to RS-422/485

Older 1.1-compatible units are supported by a different driver set.
Please visit www.quatech.com and download the correct driver set.
Contact our technical support department if you have any questions.

All USB-to-Serial products have a sticker listing manufacturing data.  This
sticker is on the bottom of the case, except for the SSU devices, which
have the sticker on the side of the case.

Find the sticker on your USB-to-Serial product.  Locate the assembly revision
level.  The assembly revision level is made up of a letter designating a
major level and an optional digit designating a minor level.  Major revisions
increase in alphabetical order.  Minor revisions increase in numerical order.

  Example:  F3 is higher than F2.
            F2 is higher than F.
            F  is higher than E4.

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[SECTION 3:  New Hardware Installation]

If you are attempting to install your product for the first time, please read
the PDF file User’s Manual on the CD which came with your hardware.  That
document will contain detailed instructions with screen shots from the
different versions of Windows to guide you through the installation process.

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[SECTION 4: Updating drivers on Windows for an Existing Hardware Installation]

On Windows 7, use the "Update Drivers" button in Device Manager.  Skip the 
rest of this section's instructions.

On older versions of Windows...

The "Update Drivers" button in Device Manager on versions of Windows prior to 
Windows 7 does not always work reliably and should not be used to update 
USB-to-Serial device drivers.  It is necessary to uninstall the USB-to-Serial 
device, remove the files that Windows uses to choose the proper drivers, and 
then reinstall the USB-to-Serial device using the new drivers.
Follow the detailed steps below.  Contact Quatech technical support for
assistance if you have any questions or difficulties with these steps.

Uninstalling the old drivers
----------------------------

(These steps are for Windows XP.  Other version are similar.)

1.  Ensure that a USB cable is connected between the USB-to-Serial device and
    your computer.
2.  Open Device Manager by clicking the "Start" button, then selecting
    "Settings->Control Panel."  Double-click the "System" icon.  Click on
    the "Hardware" tab, then the "Device Manager" button.
3.  Double-click on "Multi-port serial adapters."  You should see your
    USB-to-Serial device listed under "Multi-port serial adapters."
4.  Click on the entry for the USB-to-Serial, then from the menu bar, select
    "Action/Uninstall."
5.  Unplug the USB-to-Serial device's USB cable.
6.  Click the "Start" button, then "Search."
7.  Click on "All Files and Folders" if you see it in the left-hand pane.
8.  In the "All or part of the file name" box, type "OEM*.INF".
9.  In the "A Word or phrase in the file" box, type "QTUSB".
10. In the "Look in" box, select "Local Hard Drives".
11. Under "Advanced Options," make sure the following checkboxes are checked:
    "Search system folders"
    "Search hidden files and folders"
    "Search subfolders"
11. Click the "Search" button.  Wait for the search to complete.
    Results will appear in the right-hand pane.
12. Note any matching files that reside in the \WINDOWS\INF folder.
    Select one of them and click it with the right mouse button.
    Choose "Open Containing Folder."  This should open the \WINDOWS\INF folder
    with the file highlighted.
13. Select all of the files that matched the search results.  (The search
    results window should still be open if you need to refer back to it.)
    Also select the files with the same name but a file extension of .PNF.
    For instance, if the search found OEM7.INF, select OEM7.INF and OEM7.PNF.
14. Drag the files to the Recycle Bin.
15. Close all windows.
16. Shutdown the computer and reboot.

Installing the new drivers
--------------------------

1.  Plug the USB cable into the USB-to-Serial device.
2.  Windows should detect the USB-to-Serial device as new hardware.
3.  Follow the wizard prompts to install the new drivers.
    Be sure to point to the new drivers as you step through the wizard.


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[SECTION 5: Files Includes with this Driver Set]

The set consists of all driver files required for Windows installations
and their destination directories, where d: is the drive on which Windows
is installed.


   Destination directory d:\winnt\inf\
   qtusbbx2.inf
   qtusbpt2.inf

   Destination directory d:\winnt\system32\
   cocpyinf.dll
   qtucomco.dll
   qtucompp.dll
   qtucomco64.dll
   qtucompp64.dll

   Destination directory d:\winnt\system32\drivers\
   qtucombx.sys
   qtucompt.sys
   qtwdmlib.sys
   qtucombx64.sys
   qtucompt64.sys
   qtwdmlib64.sys

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[SECTION 6: Release Notes]

Please refer to the HISTORY.TXT file for change history.

