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Cannot change Com3 settings at command prompt

System is XP Pro.
PC has (4) com ports.  1 & 2 are the standard integrated on mother board.
3 & 4 are via a PCI communications add in board.

Windows recognizes all 4 ports fine and I can change settings accordingly.

However, I have  (4) barcode printers that use the command prompt
PRINT function.  I can change Com ports 1 & 2 via the MODE command
at the C:> but cannot change ports 3 & 4.

When I issue the following:

mode com3: baud=9600 parity=e data=7 stop=1 xon=on

the response is displayed as:
com3   baud=1200

Again, I can change ports 1 & 2 fine, but not 3 & 4.
Windows device manager shows no conflicts.

The main difference I see in the device manager is that
ports 1 & 2 show up as standard ports while 3 & 4 show
up as PCI.

Any thoughts?   Thanks,
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1 Solution
Does the PCI card provide true hardware COM ports? If so, they should be detected by BIOS and shown in the summary screen, including I/O address info and IRQ. This could be some kind of software issue (if  the ports are run by software/drivers) or a resources clash (if something is using the ports).
HouseofFaraAuthor Commented:
The ports show up under the device manager under PORTS.  The card info states "conforms to PC V2.1 plug and play" and "supports DOS and Windows based software".

So I am assuming that they are true hardware ports.   Device manager shows no conflicts and that they are working OK.  

HouseofFaraAuthor Commented:
The PCI card manufacturer provided a new driver and that
took care of it.   Award the points to rid as he responded and
mentioned drivers.
Thanks. Sorry I couldn't be more conclusive. Glad you got it working.

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