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I want to add an RS-232 card

HP Recommended
Pavilion Desktop 590-p0066
Microsoft Windows 10 (64-bit)

I can't seem to find the schematics for my desktop. I would like to add a RS-232 Card but not sure if it has

an expansion PCI slot inside. Thanks to all in advance for you help and idea's.

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Message 2 of 2
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HP Recommended


check this model so well



  • One PCIe x16 socket
  • One PCIe x1 socket




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