Com1 / Com2 Pin 9 Output Type Setting (J8); Ps/2 Port Output Settings (J5); Table 4-7: Serial Port Default Settings; Table 4-8: Com1 / Com2 Pin 9 Output Type Setting (J8) - Advantech UltraSlim PPC-S153 User Manual

COM1 and COM2 are one set. You can exchange the address range
and interrupt IRQ of COM1 for the address range and interrupt IRQ of
COM2. After exchanging, COM1's address range is 2F8 ~ 2FF and its
request IRQ is IRQ3: and COM2's address range is 3F8 ~ 3FF and its
interrupt IRQ is IRQ4.

Table 4-7: Serial port default settings

Port
COM1
COM2

4.4.2 COM1 / COM2 pin 9 output type setting (J8)

Table 4-8: COM1 / COM2 pin 9 output type setting (J8)

*Normal operation
6
4
2
* default setting
Note:
* default setting

4.5 PS/2 port output settings (J5)

The panel PC provides touchscreen option which is controlled
through a PS/2 interface. That is, if the touchscreen is requested, the
system should be set to enable the touchscreen. The jumper is already
3 8 PPC-S153 User's Manual
Address Range
3F8 ~ 3FF
2F8 ~ 2FF
+5 V output
5 6
3
4
1 2
Pins 1, 3 and 5 are for COM1.
Pins 2, 4 and 6 are for COM2.
Interrupt
IRQ4
IRQ3
5
3
1