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User Manual version 2305
APOLLO 120/150 III
4-31
4.2. COM Ports x 4
The APOLLO 120/150 features with four onboard COM ports.
COM 1, 2 & 4 are D-SUB serial ports located at the rear side
of the chassis, ready to connect to a wide range of serial
devices. COM 3 is internal serial port reserved for
touchscreen for internal connection. COM1, COM3 and COM4
are RS-232 and COM2 is RS-232/422/485, selected via
jumper setting. For COM 2 RS-232/422/485 selection,
please refer to SEC. 6.1.2.
COM 1, 2 & 4 are equipped with +5V/+12V power capabilities
on pin 9, providing easy accommodation to a broad range of
serial devices.
The COM port 5V/12 power is selected via jumper setting on
the IO board. The IO is the signal board attached to the rear
panel with 2 SCSI cables linking to the system motherboard
to connect the onboard signal out to the external I/O ports.
Please refer to SEC. 6.2.2 for 5V/12 power selection.