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Low Profile PCI CardsQuatech RS-232 and RS-422/485 UPCI boards completely meet the PCI 2.3 specification for Universal connectivity and Low Profile cards, as well as all other aspects of the specification so that you can be certain that every Quatech Universal Low Profile PCI card will function properly and perform reliably in your system.Compare and buy our RS-422/485 and RS-232 Low Profile PCI cards below and see the Details, Specs, Downloads, Accessories, and Application tabs for further information.