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Serial Port Card

By shantie ·
I installed a two port serial card in a ladies computer. She needed an extra port for an attachment to her sewing machine. Anyway windows 98 recognised the card and in device manager says Com port 1,Com port 5 and Com port 6. trouble is when she tries to use this attachment says cannot connect to serial port. I read through manual for this sewing device and when you open a window it has a drop down Communication window. This allows you to state which com port you want it to use. At present itsays Com 1, it then gives you a choice of Com 1,2,3 or 4. Trouble is the com ports in device manager are recognised as 1,5,6.
Why did windows consign these numbers and not 2,3,or4. Did I do something wrong when I first set up the port card to makewindows set this as 5 and 6. Most important question is how do I change this to either port 2,3, or 4. there is nothing in the bios about extra com ports. So how do I go about this as the sewing attachment will only accept 2,3,4. Greatly appreciated thank you

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Serial Port Card

by RCOM In reply to Serial Port Card

Have you connected the sewing machine cable to the original port(COM1). If something like a mouse etc is connected to COM1 move it to one of the ports on the card (COM5,6).
The card probably has jumpers on it that are set to the 2 ports you see. Orit may be set by the drivers durring installation. The instructions that came with the serial card will explain how to change ports and addresses. If you change the serial port in the computer BIOS you can set COM1 to a different port, IRq and address. By default COM1 is set to IRQ4 & 3f8. So you can change it to another setting or disable it if not used.

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Serial Port Card

by shantie In reply to Serial Port Card

Your answer did help me but a few problems,the lady lost the instructions leaflet, I emailed the manufacturer but got no response. there were no jumpers as such but marking on card eg com 1- R7, com2-R8 etc, so I presume that meant to change the IRQ. But the lady then wanted a scanner but no USB outlets. So thought discard the serial card, install USB card and use a USB mouse, leaving Com 1 for the other device. Did this, recognised in Device manager but when I tried to restart would not bootup. Took the USB card out and booted up. There were no conflicts in D/Manager. In computer manual said had connection on board for an ATX form card, with 2USB and 1 PS2. Finally found one of these. after heaps of phone calls so installing it this week. If this does not work will throw her M/board away and get her an updated one. Thanks again.

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Serial Port Card

by TheChas In reply to Serial Port Card

I believe that if you check BIOS settings, COMM2 may be assigned, even if there is not a second port on the PC.

Next, Windows assigns virtual COMM ports to any modems on the PC.
So, COMM 3 and/or 4 may be assigned to the modem.

In device manager, you can view what resources are assigned.

I would disable the missing COMM 2 in BIOS settings.
Force / help Windows assign COMM2 to the modem.
Then, you should be able to set the new serial port card to COMM 3 and 4.

Chas

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Serial Port Card

by shantie In reply to Serial Port Card

Sorry I searched and searched Bios and computer manual, ther were definately no hidden com ports. It is an odd board, only one slot, and lots of attachments on the board for extra devices. It takes an ATX form card, with infrared,2USB,1Ps2 on it. Not many computer shops had heard of this ATX card but finally found one and installing that, using a Ps2 mouse and leaving the Com port 1 for the other device. Thanks you for the answer

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Serial Port Card

by shantie In reply to Serial Port Card

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