User`s manual

Chapter 2 Connecting Peripherals 23
2.8.2 RS-232/422/485 connection (COM2-CN10)
COM2 is an RS-232/422/485 serial port. The specific port type is
determined by jumper settings, as detailed in Chapter 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 PCA-6154/6154L board's ports:
Table 2-3: PCA-6154/6154L serial port default settings
Port Address Interrupt Default
COM1 3F8, 3E8 IRQ4 3F8
COM2 2F8, 2E8 IRQ3 2F8
2.9 Power Connectors
2.9.1 Main power connector +5 V, -12 V, +12 V (CN6)
If you prefer not to acquire power through PCA-6154/6154L’s
backplane via the gold H-connectors, CN6 also provides power input
connectors for +5 V, -12 V and +12 V. Pin 8 of the PS/2 power
supply can be used, too.
2.9.2 CPU fan power supply connector (CN4)
This provides power supply to the optional CPU cooling fan. This
connector is only available when +5 V, -12 V and +12 V power is
supplied to the board.
Warning! Before making the connection, make sure the
voltage is absolutely correct and matched with the
correct connector.