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I need to add a RS232(Serial Port) connection to my pc, and unfortunately I'm unable to use RS232 to USB adapter, only direct RS232 connection, I have seen this item: https://www.aliexpress.com/item/MYLB-DB9-RS232-to-10-pin-Ribbon-Cable-Connector-Adapter/32735919280.html? and that seems nice, but I have no idea how to connect something like that, I'm pretty sure that it shouldn't be connected through the PSU, as I don't recall seeing anything similar from a PSU, so I assume you need to connect it directly to the motherboard somehow, which I believe is correct, but still, I don't know how to connect it to the motherboard, and if I even can, here are pictures of my motherboard:

https://i.stack.imgur.com/Tn2ju.jpg

https://i.stack.imgur.com/dAMg6.jpg

My motherboard is MSI B75MA-E33, so Im not even sure its the correct place to ask, but hopefully someone can help me here, thanks! :)

  • The specifications say it has one Serial port connector. Check your manual to locate it. – user931000 Sep 9 '18 at 18:52
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    You are correct, if Im not mistaken, according to the manual it is JCOM1 port, thank you :) – msacco Sep 9 '18 at 18:58
  • Beware, there are two common ways of wiring a motherboard 9-pin header to a DB9 connector. Actually there's only one correct/sensible way (i.e. that's compatible with flat ribbon cable); the other way is a mistake that has propagated because of the manufactured quantity. See superuser.com/questions/627922/… – sawdust Sep 9 '18 at 23:23
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Use any of these: https://www.google.com/search?q=pcie+rs232+card&tbm=shop ‌‌‌‌‌‌‌‌‌‌‌‌

  • Thanks but people already answered it long ago :o – msacco Sep 22 '18 at 19:24

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