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serial port on windows 7

User generated imagewant windows 7 custom desktop computer to have a female 9 pin serial port

I dont know the specs of windows7 custom desktop.

What hardware do I buy?

Is there a difference in performance?

Is there premium hardware?

Do I need to buy software

Does serial port attach to motherboard or hard drive or something else?
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ASKER

Custom/rare device does not work with usb to serial.
I dont need parallel. I just couldnt find a picture with only serial.


https://www.startech.com/ca/Cards-Adapters/Serial-Cards-Adapters/2-Port-Low-Profile-PCI-Express-Serial-Card-16950-UART~PEX2S952LP



https://www.staples.com/IOCrest-PCI-32-BIt-2x-Port-SerIal-DB9-Card-Netmos-9865-ChIpset/product_2607280

does one work better than the other?
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ASKER

User generated image
Top results of google shopping for
https://www.google.com/search?q=pci+card+9+pin+serial

say serial pci expander.

do you think any of these would work?

do I need to provide information about the desktop?

It would be easiest for me if I just ordered and gave to the desktop owner.
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ASKER

It's clear they think it's serial you mean. Might be RS422 for all we know.

I found a picture online that matches the old laptop windows xp that I successfully works with device.
usb/ethernet/hdmi to serial does not work. I tried it all.

I want to use a windows7 desktop and do not want to use old laptop anymore


The pci Express expansion card, make sure your system has ...

make sure desktop has what?
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ASKER

device is female

old laptop is male

I am looking for male on windows7 desktop

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ASKER

Thanks for your help regarding serial port.