ISA 8255
ISA AD/DA
2-Port ISA RS-232/422/485
4-Port ISA RS-232/422/485
8-Port ISA RS-232/422/485
PCI 8255
PCI AD/DA
2-Port PCI RS-232/422/485
4-Port PCI RS-232/422/485
8-Port PCI RS-232/422/485
PCI-Express RS-232 - 4-Port
PCI-Express RS-232 - 8-Port