RS-232 Serial Universal PCI Boards FAQ
My Quatech UniversalPCI board is not recognized
by my PC. What is the problem?
Is there a diagnostic program I can use to determine
if my Universal PCI serial board is working?
Why can't I get my serial board to perform at 921.6
kbps?
Under which OS is my RS-232 Universal PCI board
supported?
How do I install my RS-232 Universal PCI board
under Windows 2000/XP?
-
All of my Quatech's Low Profile Serial PCI Boards have a Microsoft Windows XP registered driver. In some cases, changes and updates are available that have not yet been registered. What does it mean to have an unregistered Windows
XP driver? Why do I get a warning screen when I install some drivers
from the Quatech COM CD?
How do I disable the Windows XP Driver Signing
check?
How do I install my Universal PCI serial board
under Windows 95/98/Me?
My Universal PCI board installs as COM 5&6
under Windows 95/98/Me, but my application can only use com port
1-4. How can I configure my card to use com ports 1-4.
How do I uninstall my Quatech Universal PCI board
under Windows 9x/2000/XP?
How do I install my RS-232 Universal PCI Board
under Windows NT?
Where can I find help with using my RS-232 Serial
Universal PCI Board under OS/2?
Do I need local administrator rights to install
a Quatech serial device?
What is the difference between an MD1 and an MD2
Low Profile PCI board?
What does it mean to say that Quatech UniversalPCI
Boards are both PCI 2.3 compliant and Low Profile PCI boards?
Can I get the "IND" surge suppression package
on Quatech UniversalPCI serial boards?
-
When installing a product, I get an error message stating "The System Cannot Find the File Specified." How can I fix this?
- My jumpers on my new board do not match the jumpers on my old board. How do I know how to configure my new card so the settings are the same as my old card?
- After updating the driver on my serial card device manager shows a yellow exclamation point with an error code 10 (Device can not start) what happened?
- My Low Profile PCI device will not install with the drivers provided. My board is identified as a PCI device.
- Why can't I change my port settings in Windows Device Manager?
- I am trying to install my QSCLP/ESCLP-100 on my PC and it my computer is freezing during the boot up process what could be the issue?
Q1. My Quatech UniversalPCI board is not
recognized by my PC. What is the problem?
A. Please verify that your PCI slot provides a +3.3V power
rail voltage. Official, standards-compliant PCI slots provide several
power rail voltages, e.g., +12V, -12V, +5V, +3.3V, etc., and one
of two signaling voltages, +5V or +3.3V.
Quatech cards are indeed Universal PCI cards, conforming to official,
standard, PCI specification 2.1 and 2.2 for 32-bit Universal PCI
cards and specification 2.3 for low-profile, 32-bit PCI cards. On
motherboards that conform to the same PCI specifications, you will
never have a problem with our card operating properly with 5V or
3.3V signaling voltages, in either a 32-bit or a 64-bit slot.
An issue arises when Quatech low-profile, Universal PCI cards are
installed in an older, non-compliant PCI slot that does not provide
the proper +3.3V power rail voltage, which we use to power the card.
This is not a design flaw, we simply designed these cards to be
used in relatively newer computers that comply with PCI specificaton
2.1 and above. Quatech standard, 32-bit,
+5V-only PCI cards are ideal for those customers with older
motherboards, or newer motherboards that are not PCI spec compliant.
Note: Quatech Universal PCI cards will work in a 32-bit slot
or a 64-bit slot if the +3.3V power rail voltage is present (as
it should be per appropriate PCI specifications), regardless of
whether +5V or +3.3V signaling is used.
For quality PCs that are 2 years old or less, with 32-bit and/or
64-bit slots, you should never hesitate to use Quatech Universal
Low Profile PCI boards. On older PCs, if it can be verified that
a motherboard with only 32-bit PCI slots supplies the +3.3V power
rail voltage, Quatech Universal Low Profile PCI cards can still
be used whether the slot uses a +5V (more than likely) or a +3.3V
signaling voltage. If the +3.3V power rail voltage is not available,
use standard PCI boards.
Q2. Is there a diagnostic program I can
use to determine if my Universal PCI serial board is working?
A. There are several ways to go about testing the product.
The easiest way for Windows users is to connect a Loopback on the
Port and use HyperTerminal to test it. HyperTerminal is included
with Microsoft operating systems. If you don't see it listed in
Program Manager, you may need to install it from the Windows CD.
OS/2 users may use the HyperAccess Lite application in the OS/2
BonusPak to do the same. RS-232
Loopback Instructions
Q3. Why can't I get my Quatech serial board
to perform at 921.6 kbps?
A. Data rates (or baud rates) are highly system dependent.
It is impossible for Quatech to know exactly how one of our products
will perform in your specific system. Some major factors that affect
baud rate are cabling, OS, and FIFOs. For more information about
maximum data rates, see the Quatech "Serial
Data Rate Information Sheet".
Q4. Under which OS is my RS-232 Serial Universal
PCI board supported?
A. View the latest OS
support matrix for RS-232 Serial Universal PCI Board.
Q5. How do I install my RS-232 Universal
PCI board under Windows 2000/XP?
A.
- Install your hardware according to the instructions in your
user's manual. Boot your machine.
- The "Welcome to the Found New Hardware Wizard" window will open.
- Click "Next" to continue.
- Follow the on-screen instructions. When prompted, point Windows
to the location in which the Quatech drivers are stored-typically
on the Quatech COM CD, or the folder on your hard drive to which
you downloaded the drivers.
Q6. All of Quatech's Universal PCI boards have a Microsoft Windows XP registered driver. In some cases, changes and updates are available that have not yet been registered. What does it mean to have an unregistered
Windows XP driver? Why do I get a warning screen when I install
some drivers from the Quatech COM CD?
A. Microsoft has implemented a new driver signing program.
This program verifies that the driver will not cause problems on
the system. Although driver signing isn't a complete indication
that a driver is safe or bug-free, it's certainly reasonable to
assume that signed drivers are generally safer for overall system
health than unsigned drivers. In addition, driver signing ensures
against a Trojan horse or virus application being introduced into
a driver, or having the driver replaced with other code.
However, just because a driver is unsigned DOES NOT mean that it
will not function properly in your system. An "unregistered" driver
is one that has not been officially tested and certified by Microsoft.
Unlike previous versions of Windows, Windows XP warns users every
time they try to install a driver that Microsoft has not certified.
Quatech thoroughly tests all drivers before releasing them to our
customers. The Microsoft XP warning has nothing to do with the quality
of our driver or its ability to function properly in your system.
XP driver development is an ongoing process. We are in the process
of submitting all Quatech Windows XP drivers for review by Microsoft,
and we fully expect to receive certification for most products in
the coming months. However, every time we update a driver it must
be re-certified. Until this certification process is complete, the
updated driver will remain unsigned. Because we want to provide
the best possible service for our customers, we release our XP drivers
prior to receiving Microsoft certification--this gets them into
your hands faster! However, we will always continue to make the
most recent signed driver available even if there are more recent
unsigned updates.
When you see this warning during an installation of a Quatech's
Windows XP driver, simply tell Windows that you want to install
the driver anyway, and continue with the standard installation process.
Q7. How do I disable the Windows XP Driver
Signing check?
A. To disable Windows XP driver signing warnings, follow
the steps below:
- Double click on the System icon in Control Panel.
- Left click on the Hardware tab.
- Left click on the Driver
Signing button. (Click here for a screen cap of the Driver
Signing Options Window)
- Choose the Ignore option. Click on O.K. and then Apply and O.K.
- Windows will not warn anymore about driver signing.
Q8. How do I install my Universal PCI serial
board under Windows 95/98/Me?
A. An "INF" configuration file is included with your Quatech
Serial board to allow easy configuration in the Windows 95/98/Me
environment. Also, a custom Windows 95/98/Me serial device driver
is included with the board to support the use of the 16750 UART's
64 byte FIFO. Windows 95/98/Me uses the "INF" file to determine
the system resources required by your board, searches for available
resources to fill the boards requirements, and then updates the
hardware registry with an entry that allocates these resources.
The following instructions provide step-by-step instructions on
installing a Quatech serial PCI board in Windows 95/98/me using
the "New Hardware Found" wizard.
- After booting the computer with a newly-installed Universal
PCI serial board, the "New Hardware Found" dialog box will appear.
If you have never installed a Quatech PCI communication adapter
before, the dialog box may simply indicate that it has found a
"PCI Card."
- Select the radio button for "Driver from disk provided by
hardware manufacturer." Click the "OK" button to continue.
- An "Install From Disk" dialog box should pop up. Insert
the Quatech COM CD with the Quatech INF files on it, select the
correct drive letter, and click the "OK" button. Windows
95/98/Me automatically browses the root directory for an .INF
file that defines configurations for Multifunction Adapters. If
no INF files are found, click the "Browse" button and navigate
to the "\Serial Port Adapters\Drivers\Windows 95, 98, Me for PCI"
folder on the Quatech COM CD. You are not required to select the
file name. After finding the directory containing the INF files,
Windows 95/98/Me will choose the correct file.
- The "New Hardware Found" dialog box will appear again,
this time for an "Unknown Device."
- Again select the radio button for "Driver from disk provided
by hardware manufacturer." Click the "OK" button to
continue.
- Another "Install From Disk" dialog box will pop up. The
path should already be pointing to the Quatech COM CD. Click the
"OK" button to continue.
- You should now see the "Copying Files" dialog box as
Windows 95/98/Me copies the driver files from the CD.
- The installation utility will ask for your Windows 95/98/Me
system CD. Serial communication ports require two drivers supplied
by Microsoft to function: SERIAL.VXD and SERIALUI.DLL. Insert
the Windows CD and click "OK."
NOTE: You may be able to skip this step if you are certain that
your system has the latest version of these files installed. If
you do not have your Windows 95/98/Me system CDs immediately available,
click "OK" anyway. A dialog box appears with an option
to Skip the files. Click the Skip button and the files will not
be installed. This is all right if the latest versions of these
drivers are currently in the \WINDOWS\SYSTEM directory.
- The "New Hardware Found" dialog will repeat as each serial
port is registered with Windows 95/98/Me.
- Installation is complete.
Q9. My Universal PCI board installs as
COM 5&6 under Windows 95/98/Me, but my application can only
use com port 1-4. How can I configure my card to use com ports 1-4.
A. See our COM
Port Enumeration Tip Sheet for answers to common questions about
installation.
Q10. How do I uninstall my Quatech Universal
PCI board under Windows 9x/2000/XP?
A. The following procedures should be used to uninstall
a Quatech Universal PCI board- where noted specific instructions
will be given for any platform dependent procedures. The uninstall
procedure should be used when you want to completely delete a Quatech
card from your system--either because you will no longer be using
the card, or if you want to "start from scratch" with
a newer version of the driver.
Step 1: Remove the product from Device Manager
- Open Device Manager and find the Quatech product.
- Highlight the product and click on the Remove button (Win9x)
or right click on it and chose uninstall from the menu (Win2000/XP).
- The Quatech product will now be removed from the Device Manager
Tree.
- If you do not see your Quatech Product in Device Manager please
try the following (Win2k/XP Only).
- Enable Device Manager to view hidden devices: Start/control
panel/System/Advanced/Environment Variables
- Under System Variables, click New.
- For variable name, enter "DEVMGR_SHOW_NONPRESENT_DEVICES".
- For value, enter 1.
- "OK" all the way back out.
- Close and reopen Device Manager. Select "View/Show
Hidden Devices".
- As a test, there should be a new category called "Non-Plug
and Play Devices." (Ignore it)
- Look for any Quatech related entries. Delete them.
Step 2: Delete .inf and .pnf files
- In Windows Explorer, go to the Tools menu and select Folder
Options...
- On the View tab enable Show Hidden files and folders.
- Uncheck Hide extensions for known file types.
- Uncheck Hide protected operating system files (Recommended).
- Click on Apply and O.K.
- Find the inf folder on the left hand side of Windows Explorer.
It will be located at c:\windows\inf or c:\winnt\inf (Win2k).
- Right click on the inf folder and select Search or Find...
- Fill in the following information for the search Results Window.
All or part of file name: *.inf
A word or phrase in the file: quatech
Look in: inf
- Click the search button.
- The search results will list a file called msports.inf. Do nothing
with this file.
- The files of interest are anything named oem?.inf. ? meaning
a number (i.e. oem3.inf). Delete the oem?.inf file that is returned
for you from the c:\windows\inf folder.
- You will also see a oem?.pnf (i.e. oem3.pnf) file. This "sister"
file must also be deleted.
Q11. How do I install my RS-232 Universal
PCI board under Windows NT?
A. Quatech provides a Device Manager for Windows NT that
is used to install the RS-232 Serial Universal PCI Board. The Quatech
Device Manager utility includes a simple add hardware wizard to
guide you through the installation. The Device
Manager is located on the Quatech COM CD, and can also be downloaded
from the provided link.
Q12. Where can I find help with using my
RS-232 Serial Universal PCI Board under OS/2?
A. Though OS/2 is becoming increasingly less popular, Quatech
knows that there are many dedicated users out there, and we are
committed to continued support of OS/2. See our OS/2
tip sheet for answers to common questions about installation,
un-installation, configuration, and troubleshooting.
Q13. Do I need local administrator rights
to install a Quatech serial device?
A. Yes. When installing most kinds of hardware, you must
have local admin rights or equivalent on the PC. If your computer
is part of a Domain or participates in a networked environment,
please contact your local LAN Administrator for assistance.
Q14. What is the difference between an
MD1 and an MD2 Low Profile PCI board?
A. Low Profile PCI cards are designed to fit into systems
as low as 3.350" with out using riser cards. There are two types
of Low Profile PCI boards: MD1 and MD2. Both are built on 32-bit
addressing, and differ only in length. MD1 boards provide the shortest
32-bit card length available, 119,91 mm (4.721 inches). MD2 defines
the maximum length of low profile PCI cards, 167,64 mm (6.600 inches).
Any card longer than 6.6 inches cannot be considered a Low Profile
PCI board. Any card between 4721 inches and 6.6 inches is an MD2
Low Profile Board. Boards shorter than 4.721 inches, like all Quatech
LowProfile Universal PCI boards, are considered MD1.
Q15. What does it mean to say that Quatech
Universal PCI Boards are both PCI 2.3 compliant and Low Profile
PCI boards?
A. The above statement is talking about three distinct aspects
of Quatech's SSCLP/DSCLP/QSCLP boards.
- That they are Universal PCI boards means that they are keyed
to be compatible with motherboards supporting both 3.3V and 5V
signaling (see above for more information on UniversalPCI)
- That they are PCI 2.3 compliant means that they conform to all
mandatory aspects of the latest PCI 2.3 specification. Most notably,
this means that they support 3.3V signaling, as PCI 2.3 makes
this manditory for all plug-in boards.
- Finally, that they are Low Profile means that they conform to
a specific size specification outlined in the PCI 2.3 specification.
(See above for more information about LowProfile PCI board sizes)
Q16. Can I get the "IND" surge suppression
package on Quatech UniversalPCI serial boards?
A. No. At this time that option is only available on our
PCI boards. If you are interested in getting the "IND" option
for UniversalPCI boards, please contact your Quatech
sales representative to discuss custom product ordering.
Q17. When installing a product, I get an error message stating "The System Cannot Find the File Specified." How can I fix this?
A. Windows 2000/XP has a bug that it cannot properly detect new hardware by *.inf files, if the RunOnce registry key is missing.
This key is often used by installers to execute post-reboot programs, but sometimes they accidentally delete this key.
Go to Start » Run and enter "regedit"
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
With CurrentVersion Highlighted, go to the Edit menu and select New » Key
Name the key RunOnce - Leave everything else about the key alone.
The RunOnce key should now exist underneath the CurrentVersion key.
Reboot your PC.
Once the key exists, Windows 2000/XP stops redetecting the Hardware
Q18. My jumpers on my new board do not match the jumpers on my old board. How do I know how to configure my new card so the settings are the same as my old card?
A. All of the Universal Low Profile PCI Serial Cards have the ability to be configured through software selections. Hardware jumper settings are no longer necessary to configure the PCI card. Please see your User’s Manual for further details on software selections.
Q19. After updating the driver on my serial card device manager shows a yellow exclamation point with an error code 10 (Device can not start) what happened?
A. All of our serial devices have two separate listings in Device Manager after installation. The parent device which will be your device name will be listed under Multiport Serial Adapters. The second listing is for the com ports themselves which will be found under Ports (com&lpt). When updating a driver for a Quatech device you will need to be sure that you run the update for both the board and the ports. If the driver for the board and ports do not match an error code 10 will appear. To check your driver version please right click on the board/ports and go to properties. From there you will click on the drivers tab.
Q20. My Low Profile PCI device will not install with the drivers provided. My board is identified as a PCI device.
A. The two common reasons this happens is 1)the card programming has somehow become corrupted or 2) The pci slot you are plugged into is having issues. If at all possible can you please try to install on another pc. That would determine if the issue is with the card or PC. If it is with the card please contact Quatech at 1-800-553-1170.
Q21. Why can’t I change my port settings in Windows Device Manager?
A. The application used with the device manger interface changed from a drop down menu to a toggle. Please refer to the screen shot below:

Q22. I am trying to install my QSCLP/ESCLP-100 on my PC and my computer is freezing during the boot up process what could be the issue?
A. On some faster machines, ports were starting to be initialized before the previous port was done being initialized, causing an unforeseen conflict. This was fixed in v1.91 (an unsigned version of the driver). The WHQL signature was added for v2.00 and can be downloaded from:
http://www.quatech.com/support/drivers_upci.php |