Aaeon PCM-5890 Manual page 31

COM2 RS-232/422/485 SELECTION
J19
J20
J21
J22
The IRQ and address range for those ports are fixed. However if
you wish to disable the port or change these parameters later you
can do this in the system BIOS setup. The table below shows the
settings for the PCM-5890's ports.
PCM-5890 Serial port settings (Default)
Port
COM1
COM2
COM3
COM4
The PCM-5890's PCI SVGA interface can drive conventional
CRT displays and is capable of driving a wide range of flat panel
displays, including electroluminescent (EL), gas plasma, passive
LCD and active LCD displays. The card has two connectors to
support these displays, one for standard CRT VGA monitors and
one for flat panel displays.
CN3 is a 16-pin, dual-in-line header used for conventional CRT
displays. A simple one-to-one adapter can be used to match CN3
to a standard 15-pin D-SUB connector commonly used for VGA.
Pin assignments for CRT display connector CN3 are detailed in
Appendix C.
22 PCM-5890 User's Manual
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*RS-232
Address Range
2E8~3F8
2E8~3F8
Interrupt Default
IRQ4 3F8
IRQ3 2F8
IRQ5/IRQ10 3E8
IRQ10/IRQ5 2E8
RS-422/485