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Add on Card only one Serial Port Works

Posted on 2013-05-10
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Last Modified: 2013-05-19
We installed a Windows 7 desktop with an MSI FM2-A55M-E33 Motherboard.  I have an add on PCI Card with 1 Parallel DB-25 LPT port and 2 Serial DB-9 COM ports (Syba SY-PCI50009).  

The Syba Card works on Com3 but the Com4 port doesn't work.  The Motherboard has a Com port header on it as well and I haven't tried connecting to it or disabling it in BIOS.  Just wondering if you guys think that is the problem or if there is a more common problem that may be known as causing issue with these cards.

Thank you for your help in advance.
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Question by:kadafitcd
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7 Comments
 
LVL 22

Assisted Solution

by:Paka
Paka earned 125 total points
ID: 39156993
Did you install the driver from the sybausa site?

http://www.sybausa.com/productInfo.php?iid=605

The more advanced drivers will allow you to change the com ports so they don't conflict...
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LVL 21

Assisted Solution

by:CompProbSolv
CompProbSolv earned 125 total points
ID: 39157187
Is the port showing up properly in Device Manager?
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LVL 12

Author Comment

by:kadafitcd
ID: 39161515
Yes I installed the drivers that came with the card first then tried the drivers from syba's site.

Yes they are showing in device manager as "The device is working properly"
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LVL 21

Assisted Solution

by:CompProbSolv
CompProbSolv earned 125 total points
ID: 39161952
You mention that Com3 works but Com4 does not.  I am assuming that you can reconfigure each physical port however you wish.  Is it the first physical port that is working and the second is not or is the issue that whichever one you configure as COM4 does not work, though it does work if configured as COM3?

I am trying to separate configuration/software issues from hardware ones here.

When you say that it does not work, are you doing an internal loopback test or are you testing it externally?
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LVL 22

Assisted Solution

by:Paka
Paka earned 125 total points
ID: 39163429
Go to Device Manager, Ports
Right-click COM4

Within the tabs, do you have the option to change it to a different port; if so, then try a different COM number.
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LVL 12

Accepted Solution

by:
kadafitcd earned 0 total points
ID: 39164927
Ok we were able to get it working.  It ended up just being a baud issue.  I went into the card under device manager and changed the baud to match what the program was looking for and it all started working properly. Thank you all for the help.  I will award points for the effort.
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LVL 12

Author Closing Comment

by:kadafitcd
ID: 39178263
The problem was found in the baud settings.
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