User manual

TREK-743 User Manual 28

4.4.1 COM Port Pin 9 Power Output Setting (CN27)

Pin 9 on COM1, COM2 port can activate external power output.

4.4.2 COM Port Pin 9 Power Output Value Setting (JP2)

Table 4.8: COM Port Pin 9 Power Output Setting (CN27)

External power output disable (Default) External power output enable

Note! 1. Normally, Pins 1, 3, 5 are assigned to COM1; and Pins 2, 4, 6 are

assigned to COM2.

2. The normal external power output value is DC 5V. For DC 12V, an

OEM request is required to modify the motherboard.

531

642

531

642

Table 4.9: COM Port Pin 9 Power Output Value Setting (JP2)

5V (Default) 12V (Optional)