Advantech PCI-6870 Series, User Manual

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PCI-6870 User’s Manual 18
2.5.8 RS-232/422/485 connector (CN8) (COM2:RS-232/
422/485)
COM2 is an RS-232/422/485 serial port. The specific port type is
determined by jumper settings (J3), as detailed in Section 2.4.1.
The IRQ and address range for both 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 PCI-6870 board’s ports:
2.5.9 USB Connector (CN9)
The PCI-6870 board provides two USB (Universal Serial Bus)
interfaces, which give complete plug and play and also hot
attach/detach for up to 127 external devices. The USB interfaces
comply with USB specification rev. 1.0 and are fuse protected.
The USB interfaces are accessed through a 10-pin flat-cable
connector, CN9. The adapter cable has a 10-pin connector on one
end and a USB connector on the bracket.
The USB interfaces can be disabled in the system BIOS setup.
2.5.10 EBX Power Connector (CN11)
If you prefer not to acquire power through PCI-6870’s backplane
via the gold H-connectors, CN11 also provides power input
connectors for +5 V and +12 V. (see Appendix B)
2.5.11 CPU Fan Power Supply Connector (CN12)
This provides power supply to the optional CPU cooling fan. This
connector is only available when +12 V power is supplied to the
board.
Table 2.6: PCI-6870 serial port default settings
Port Address Interrupt Default
COM1 3F8, 3E8 IRQ4 3F8
COM2 2F8, 2E8 IRQ3 2F8