NCR 7458 - Manual (Page 70)

3-46 Chapter 3: Hardware Service
2-Port PCI RS-232 Expansion Card (3212-K171)
The SIIG Full Profile PCI 2S RS-232 Board provides two additional
RS-232 ports. The board requires one unique IRQ and two eight-byte
I/O addresses which are automatically assigned by the PCI BIOS. It
can operate in a DOS/Windows 3.1x, Windows 95/98/98 SE/NT4.0/
2000 or Windows XP environment. The board has two RS-232 ports for
connecting peripheral devices. See the 2-Port PCI RS-232 Expansion
Card (3212-K171) for installation information.
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